Question

Me ajuda o deve e pra entregar ainda hoje

Answer 1

1)

a)

6x+15+2x+5=180

8x+20=180

8x=160

x=20°

b)

x+12+x+48=180

2x+60=180

2x=120

x=60°

c)

2x+12+90+2x+10=180

4x+122=180

4x =68

x=17°