Equations With One Variable
PSAT Math · Flashcards
PSAT MATH · FLASHCARDS
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QUESTION
What property justifies adding the same number to both sides of
x
−
7
=
12
x-7=12
x
−
7
=
12
?
QUESTION
What is the solution set of
3
(
x
−
2
)
=
3
x
−
6
3(x-2)=3x-6
3
(
x
−
2
)
=
3
x
−
6
?
QUESTION
What is the solution to
2
x
+
1
5
=
3
\frac{2x+1}{5}=3
5
2
x
+
1
=
3
?
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ANSWER
x
=
7
x=7
x
=
7
. Multiply by
5
5
5
to get
2
x
+
1
=
15
2x+1=15
2
x
+
1
=
15
, then solve for
x
x
x
.
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