Question

Por favor alguém pode me ajudar 180-[(3(90-x/2)]=3(90-x)

Answer 1

180-3(90-x/2) = 3(90-x)
180-270+3x/2 = 270-3x
-90+3x/2 = 270-3x
3x/2+3x = 270+90
(3x+6x)/2 = 360
9x/2 = 360
9x = 360·2
9x = 720
x = 720/9
x = 80