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Let’s check out your problem:
Solve for
z
z
z
.
\newline
42
=
−
7
(
z
−
3
)
42=-7(z-3)
42
=
−
7
(
z
−
3
)
\newline
z
=
z=
z
=
View step-by-step help
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Math Problems
Algebra 1
Solve linear equations: mixed review
Full solution
Q.
Solve for
z
z
z
.
\newline
42
=
−
7
(
z
−
3
)
42=-7(z-3)
42
=
−
7
(
z
−
3
)
\newline
z
=
z=
z
=
Distribute
−
7
-7
−
7
:
First, distribute the
−
7
-7
−
7
into the parentheses on the right side of the equation.
\newline
42
=
−
7
(
z
−
3
)
42 = -7(z - 3)
42
=
−
7
(
z
−
3
)
\newline
42
=
−
7
z
+
21
42 = -7z + 21
42
=
−
7
z
+
21
Isolate variable term:
Next, isolate the variable term by moving the constant on the right side to the left side of the equation.
\newline
42
−
21
=
−
7
z
42 - 21 = -7z
42
−
21
=
−
7
z
\newline
21
=
−
7
z
21 = -7z
21
=
−
7
z
Divide by
−
7
-7
−
7
:
Now, divide both sides by
−
7
-7
−
7
to solve for
z
z
z
.
21
−
7
=
−
7
z
−
7
\frac{21}{-7} = \frac{-7z}{-7}
−
7
21
=
−
7
−
7
z
−
3
=
z
-3 = z
−
3
=
z
More problems from Solve linear equations: mixed review
Question
Evaluate.
\newline
6
7
÷
1
6
=
\frac{6}{7} \div \frac{1}{6}=
7
6
÷
6
1
=
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Posted 1 year ago
Question
What is the slope of the line?
\newline
y
+
3
=
−
4
(
x
+
7
)
y+3=-4(x+7)
y
+
3
=
−
4
(
x
+
7
)
\newline
Choose
1
1
1
answer:
\newline
(A)
−
4
-4
−
4
\newline
(B)
−
7
-7
−
7
\newline
(C)
3
7
\frac{3}{7}
7
3
\newline
(D)
−
3
4
-\frac{3}{4}
−
4
3
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Posted 1 year ago
Question
Which equation has a constant of proportionality equal to
9
9
9
?
\newline
Choose
1
1
1
answer:
\newline
(A)
y
=
81
3
x
y=\frac{81}{3} x
y
=
3
81
x
\newline
(B)
y
=
9
x
y=9 x
y
=
9
x
\newline
(C)
y
=
3
x
y=3 x
y
=
3
x
\newline
(D)
y
=
1
9
x
y=\frac{1}{9} x
y
=
9
1
x
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Posted 1 year ago
Question
Solve for
h
h
h
.
\newline
3
7
=
h
14
−
2
7
\frac{3}{7}=\frac{h}{14}-\frac{2}{7}
7
3
=
14
h
−
7
2
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Posted 1 year ago
Question
Solve for
x
x
x
.
\newline
−
4.5
=
−
0.5
(
x
−
7.1
)
-4.5=-0.5(x-7.1)
−
4.5
=
−
0.5
(
x
−
7.1
)
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Posted 1 year ago
Question
Solve for
n
n
n
.
\newline
n
5
+
0.6
=
2
\frac{n}{5}+0.6=2
5
n
+
0.6
=
2
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Posted 1 year ago
Question
Solve for
j
j
j
.
\newline
−
1
3
=
j
4
−
10
3
-\frac{1}{3}=\frac{j}{4}-\frac{10}{3}
−
3
1
=
4
j
−
3
10
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Posted 1 year ago
Question
Solve for
m
m
m
.
\newline
m
9
+
2
3
=
7
3
\frac{m}{9}+\frac{2}{3}=\frac{7}{3}
9
m
+
3
2
=
3
7
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Posted 1 year ago
Question
Solve for
b
b
b
.
\newline
−
3
b
+
2.5
=
4
-3 b+2.5=4
−
3
b
+
2.5
=
4
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Posted 1 year ago
Question
You pick a card at random, put it back, and then pick another card at random.
\newline
4
4
4
\newline
5
5
5
\newline
6
6
6
\newline
7
7
7
\newline
What is the probability of picking a number greater than
5
5
5
and then picking a
4
4
4
?
\newline
Write your answer as a percentage.
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Posted 4 months ago
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