Question

Me ajuda a resolver

Answer 1

a) x+75+30=180
x+105=180
x=180-105
x=75

b)x+x+x=180
3x=180
x=180÷3
x=60

c)x+70+60=180
x+130=180
x=180-130
x=50

d)2x+90+30=180
2x+120=180
2x=180-120
2x=60
x=60÷2
x=30

e)x+x+30=180
2x=180-30
2x=150
x=150÷2
x=75

f)x+50+38=180
x+88=180
x=180-88
x=92