AnswersMath 8Solving with Variables on Both Sides

Solving with Variables on Both Sides Answers

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1
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What could you do to isolate the variable term to one side of the equation?

A
Add 3x to both sides.
B
Subtract 3x from both sides.
C
Add 18 to both sides.
D
Subtract 18 from both sides.
2
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x =

Answer:

1.8

3

What is the solution to the equation 13.7y = 6.2y + 30?

A
y = –4
B
y = –1.5
C
y = 1.5
D
y = 4
4

Add 7/12 to both sides.Subtract 7/12 from both sides.✔ Divide both sides by 7/12.Multiply both sides by 7/12.

A
Add 7/12 to both sides.
B
Subtract 7/12 from both sides.
C
✔ Divide both sides by 7/12.
D
Multiply both sides by 7/12.
5

What is the solution? x = -30/7x = -7/30✔ x = 30/7x = 7/30

A
x = -30/7
B
x = -7/30
C
✔ x = 30/7
D
x = 7/30
6

What is the solution?y =

Answer:

-8.5

7

One-fifth x minus StartFraction 7 Over 3 EndFraction = negative one-half StartFraction 7 Over 10 EndFraction x = StartFraction 7 Over 3 EndFraction Negative StartFraction 7 Over 3 EndFraction = Negative StartFraction 7 Over 10 EndFraction x x = negative five-halves x + StartFraction 35 Over 3 EndFraction

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
E
Option
Option E
8

When Zack checked his solution, it didn’t work. What was his mistake?

A
In step 1, he should have used the multiplication property of equality.
Option A
B
In step 2, he should have a constant of – 4 on the right side.
Option B
C
In step 3, he should have divided both sides by .
Option C
D
In step 4, the answer should be positive.
Option D
9

How old is my dog? years old

Answer:

16

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