Question

me ajuda,por favor !!​

Answer 1

$x + 75 = 180 \\ \\ x = 105$

$y + 120 = 180 \\ \\ y = 60$

$x + y + z = 180 \\ \\ 105 + 60 + z = 180 \\ \\ 165 + z = 180 \\ \\ z = 15$