Respuesta :

we have

- 23 = -9+7(v - 3)

apply distributive property right side

-23=-9+7v-21

combine like terms

-23=7v-30

Adds 30 both sides

-23+30=7v-30+30

7=7v

Divide by 7 both sides

7/7=7v/7

1=v

v=1