Question

Calcule o valor do x:
x+10°+110°+x=180°

Answer 1

x + 10° + 110°+ x = 180°
x + x + 10 + 110 = 180
2x + 120 = 180
2x = 180 - 120
2x = 60
x = 60/2
x = 30º

Answer 2

x+x=180-10-110
2x  = 60
x    = 30