Question

Na figura a seguir, r // s. Calcule x + y.

Answer 1

3x + 120 + x = 180º
4x + 120 = 180
4x = 180 - 120
4x = 60
x = 60/4
x = 15

19y - 23 = x
19y - 23 = 15
19y = 23+15
19y = 38
y = 38/19
y = 2