Question

Sabendo que r // s, calcule o valor de x + y.

Answer 1

9x+10°=3x+82°,

9x-3x=82°-10°

6x=72°

x=72°/6

x=12°

9x+10°+y=180°

9.12°+10°+y=180°

108°+10°+y=180°

118°+y=180°

y=180°-118°

y=62°

x+y= 12°+62°=74°