Respuesta :

Answer:

90+36+7x+5=180 ( sum of all angles of a triangle)

131+7x=180

7x=180-131

x=49/7

hence the value of x=7

7x+5+36+90=180
7x+131=180(combined like term)
-131 -131
7x=49
7x/7= 49/7
X=7