Question

Find the value of Sy- 7 given that - 2y +1=3.Simplif our answer as much as possible,5y-7=

Answer 1

5y -7 = -12

Explanation:

First we will solve this: - 2y +1=3

Collect like terms:

-2y = 3-1

-2y = 2

Divide both sides by -2

y = 2/-2

y = -1

Insert the value of y:

5y -7 = 5(-1) - 7

= -5 - 7

= -12

Therefore, 5y -7 = -12