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Math Problems
Grade 7
Evaluate multi-variable expressions
Evaluate the expression for
b
=
7
b = 7
b
=
7
and
c
=
7
c = 7
c
=
7
.
\newline
b
+
c
=
b + c =
b
+
c
=
_____
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Evaluate the expression for
j
=
2
j = 2
j
=
2
and
k
=
9
k = 9
k
=
9
.
\newline
j
+
k
=
j + k =
j
+
k
=
_____
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Evaluate the expression for
d
=
6
d = 6
d
=
6
and
f
=
0
f = 0
f
=
0
.
\newline
d
+
f
=
d + f =
d
+
f
=
_____
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Evaluate the expression for
b
=
7
b = 7
b
=
7
and
c
=
4
c = 4
c
=
4
.
\newline
b
−
c
=
b - c =
b
−
c
=
_____
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Evaluate the expression for
y
=
1
y = 1
y
=
1
and
z
=
9
z = 9
z
=
9
.
\newline
y
+
z
=
y + z =
y
+
z
=
_____
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Evaluate the expression for
b
=
1
b = 1
b
=
1
and
c
=
9
c = 9
c
=
9
.
\newline
b
c
=
bc =
b
c
=
_____
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Evaluate the expression for
r
=
1
r = 1
r
=
1
and
s
=
6
s = 6
s
=
6
.
\newline
r
s
=
rs =
rs
=
_____
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Evaluate the expression for
n
=
11
n = 11
n
=
11
and
p
=
5
p = 5
p
=
5
.
\newline
n
−
p
=
n - p =
n
−
p
=
_____
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Evaluate the expression for
d
=
6
d = 6
d
=
6
and
f
=
6
f = 6
f
=
6
.
\newline
d
−
f
=
d - f =
d
−
f
=
_____
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Evaluate the expression for
j
=
0
j = 0
j
=
0
and
k
=
3
k = 3
k
=
3
.
\newline
j
k
=
jk =
jk
=
_____
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Evaluate the expression for
y
=
1
y = 1
y
=
1
and
z
=
13
z = 13
z
=
13
.
\newline
y
z
=
yz =
yz
=
_____
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Evaluate the expression for
v
=
2
v = 2
v
=
2
and
w
=
9
w = 9
w
=
9
.
\newline
v
+
w
=
v + w =
v
+
w
=
_____
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Evaluate the expression for
u
=
9
u = 9
u
=
9
and
v
=
11
v = 11
v
=
11
.
\newline
u
+
v
=
u + v =
u
+
v
=
_____
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Evaluate the expression for
n
=
10
n = 10
n
=
10
and
p
=
5
p = 5
p
=
5
.
\newline
n
−
p
=
n - p =
n
−
p
=
_____
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Evaluate the expression for
h
=
2
h = 2
h
=
2
and
j
=
5
j = 5
j
=
5
.
\newline
h
j
=
hj =
hj
=
_____
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Evaluate the expression for
v
=
11
v = 11
v
=
11
and
w
=
8
w = 8
w
=
8
.
\newline
v
+
w
=
v + w =
v
+
w
=
_____
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Evaluate the expression for
t
=
8
t = 8
t
=
8
and
u
=
1
u = 1
u
=
1
.
\newline
t
+
u
=
t + u =
t
+
u
=
_____
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Evaluate the expression for
y
=
3
y = 3
y
=
3
and
z
=
6
z = 6
z
=
6
.
\newline
y
z
=
yz =
yz
=
_____
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Evaluate the expression for
n
=
5
n = 5
n
=
5
and
p
=
2
p = 2
p
=
2
.
\newline
n
p
=
np =
n
p
=
_____
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Evaluate the expression for
j
=
7
j = 7
j
=
7
and
k
=
3
k = 3
k
=
3
.
\newline
j
−
k
=
j - k =
j
−
k
=
_____
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Evaluate the expression for
d
=
2
d = 2
d
=
2
and
f
=
2
f = 2
f
=
2
.
\newline
d
+
f
=
d + f =
d
+
f
=
_____
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Evaluate the expression for
f
=
11
f = 11
f
=
11
and
g
=
2
g = 2
g
=
2
.
\newline
f
+
g
=
f + g =
f
+
g
=
_____
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Evaluate the expression for
h
=
9
h = 9
h
=
9
and
j
=
2
j = 2
j
=
2
.
\newline
h
−
j
=
h - j =
h
−
j
=
_____
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Evaluate the expression for
u
=
9
u = 9
u
=
9
and
v
=
2
v = 2
v
=
2
.
\newline
u
v
=
uv =
uv
=
_____
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Evaluate the expression for
b
=
8
b = 8
b
=
8
and
c
=
5
c = 5
c
=
5
.
\newline
b
+
c
=
b + c =
b
+
c
=
_____
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Evaluate the expression for
h
=
5
h = 5
h
=
5
and
j
=
3
j = 3
j
=
3
.
\newline
h
j
=
hj =
hj
=
_____
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Evaluate the expression for
u
=
9
u = 9
u
=
9
and
v
=
2
v = 2
v
=
2
.
\newline
u
−
v
=
u - v =
u
−
v
=
_____
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Evaluate the expression for
y
=
11
y = 11
y
=
11
and
z
=
9
z = 9
z
=
9
.
\newline
y
−
z
=
y - z =
y
−
z
=
_____
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Evaluate the expression for
b
=
9
b = 9
b
=
9
and
c
=
2
c = 2
c
=
2
.
\newline
b
+
c
=
b + c =
b
+
c
=
_____
Get tutor help
In a hyperbola if
a
=
3
a = 3
a
=
3
and
c
=
5
c = 5
c
=
5
then
b
=
b =
b
=
______
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What is the value of the expression below when
w
=
4
w=4
w
=
4
and
x
=
5
x=5
x
=
5
?
\newline
9
w
−
7
x
9 w-7 x
9
w
−
7
x
\newline
Answer:
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What is the value of the expression below when
z
=
4
z=4
z
=
4
and
w
=
5
w=5
w
=
5
?
\newline
3
z
+
w
3 z+w
3
z
+
w
\newline
Answer:
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What is the value of the expression below when
w
=
6
w=6
w
=
6
and
x
=
7
x=7
x
=
7
?
\newline
10
w
+
7
x
10 w+7 x
10
w
+
7
x
\newline
Answer:
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What is the value of the expression below when
y
=
8
y=8
y
=
8
and
z
=
8
z=8
z
=
8
?
\newline
2
y
+
10
z
2 y+10 z
2
y
+
10
z
\newline
Answer:
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What is the value of the expression below when
z
=
3
z=3
z
=
3
and
w
=
3
w=3
w
=
3
?
\newline
2
z
−
w
2 z-w
2
z
−
w
\newline
Answer:
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What is the value of the expression below when
z
=
3
z=3
z
=
3
and
w
=
8
w=8
w
=
8
?
\newline
8
z
+
2
w
8 z+2 w
8
z
+
2
w
\newline
Answer:
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What is the value of the expression below when
y
=
7
y=7
y
=
7
and
z
=
4
z=4
z
=
4
?
\newline
2
y
+
5
z
2 y+5 z
2
y
+
5
z
\newline
Answer:
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{
y
=
x
−
4
y
=
4
x
+
2
\left\{\begin{array}{l}y=x-4 \\ y=4 x+2\end{array}\right.
{
y
=
x
−
4
y
=
4
x
+
2
\newline
x
=
x=
x
=
\newline
y
=
y=
y
=
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