Question

PLEASE HELLLP!!!!! If x+7=2y and y=2x−1, what is the value of y? (NOT 13)

Answer 1

Answer:

(C) 5

Step-by-step explanation:

x+7=2y

Subtract 7 from both sides

x=2y-7

2y-7=x

Multiply both sides by 2

4y-14=2x

y=2x−1

Add 1 to both sides

y+1=2x

Combine equations:

y+1=4y-14

Add 14 to both sides

y+15=4y

Subtract y from both sides

15=3y

3y=15

Divide both sides by 3

y=5

The answer is (C) 5.