Question

Não consigo resolver me ajudem!

Answer 1

A) 12x+10°+5x=180°

17x+10°=180°

17x=180°-10°

x=170°/17

x=10


B) 50+x+10=90°

x=90°-60

x=30


C) 2x+x-15°=90

3x=105

x=35


D) x+16+62+3x-22=180

4x+56=180

4x=180-56

4x=124

x=124/4

x=31