Question

Determine o valor dos termos desconhecidos nos triângulos abeixo:

Answer 1

a) 85+52+y= 180
137+y=180
y=180-137
y=43

y+x=180
43+x=180
x=180-43
x=137

b) 4x-40+(-20)+x=180
4x-40-20+x=180
5x-60=180
5x=180+60
5x=240
x=48

c) 3x-16+2x+6=180
5x-10=180
5x=180+10
5x=190
x=38

4x+22+38=180
4x+60=180
4x=180-60
4x=120
x=30