Question

ajuda vai está na foto ​

Answer 1

n=180-126

n=54

y+(y-30)+ 54=180

y+y-30+54=180

2y+24=180

2y=180-24

2y=156

y=156/2

y=78

z=180-126

z=54

x+36+78+54=180

x+168=180

x=180-168

x=12