Respuesta :

ANSWER

-6

EXPLANATION

We have that:

To find x, it is important that we notice that:

This implies that:

x + 126 + x + 37 = 151

Collect like terms:

x + x = 151 - 126 - 37

2x = -12

x = -12 / 2

x = -6

That is the value of x.