-4(7 + v) = 28
pls help me step by step how to do it. :)

-14

Step-by-step explanation:

-4(7 + v) = 28

expand

-4*7 + -4*v =28

group like terms

-28 -4v= 28

-4v=28+28

-4v=56

v=-56/4

v= -14

4(7+v)=28

1

Divide both sides by -4−4.

7+v=-\frac{28}{4}7+v=−428

2

Simplify  \frac{28}{4}428  to  77.

7+v=-77+v=−7

3

Subtract 77 from both sides.

v=-7-7v=−7−7

4

Simplify  -7-7−7−7  to  -14−14.

v=-14v=−14

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation: