Question

51) Dois ângulos são suplementares .Calcule-os , sabendo que 4/7 de um deles somado aos 3/5 do outro é igual a 104° .

Answer 1

x+y=180°

4/7x+3/5y=104°

y=180-x

4/7x+3/5(180-x)=104


4/7x+108-3/5x=104

108-104=3/5x-4/7x

4=21/35x-20/35x

4=1/35x

x=140°

y=180-x

y=40°