Question

ângulos complementares y/2 + y/3 = 90

Answer 1

y/2+y/3=90         mmc=6

3y/6+2y/6=540/6

3y+2y=540

5y=540

y=540/5

y=108

Testando o valor de y encontrado

3y+2y=540

3*108+2*108=540

324+216=540

540=540