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10
+
x
=
20
x
=
?
10+x=20\newline x=?
10
+
x
=
20
x
=
?
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Math Problems
Algebra 1
Solve linear equations: mixed review
Full solution
Q.
10
+
x
=
20
x
=
?
10+x=20\newline x=?
10
+
x
=
20
x
=
?
Isolate variable x:
Isolate the variable x by subtracting
10
10
10
from both sides of the equation.
\newline
10
+
x
−
10
=
20
−
10
10 + x - 10 = 20 - 10
10
+
x
−
10
=
20
−
10
Simplify equation:
Simplify both sides of the equation.
\newline
x
=
20
−
10
x = 20 - 10
x
=
20
−
10
\newline
x
=
10
x = 10
x
=
10
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How many solutions does the following equation have?
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(A) No solutions
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(B) Exactly one solution
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9
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How many solutions does the following equation have?
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−
6
(
x
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7
)
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−
4
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−
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answer:
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(A) No solutions
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(B) Exactly one solution
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(C) Infinitely many solutions
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How many solutions does the following equation have?
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Choose
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(A) No solutions
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(B) Exactly one solution
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(C) Infinitely many solutions
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Question
How many solutions does the following equation have?
\newline
9
z
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6
+
7
z
=
16
z
−
6
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z
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6
+
7
z
=
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−
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\newline
Choose
1
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answer:
\newline
(A) No solutions
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(B) Exactly one solution
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(C) Infinitely many solutions
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