Question

x-1/8+y=3/7
2(4x+2)=9(5y+9)​

Answer 1

Resposta: {x-1/8+y=3/7

{2(4x+2)=9(5y+9)

{x-1/8+y=3/7 => 7x - 7+ 56y = 24 => 7x + 56y = 24+7 => 7x + 56y = 31

{2(4x+2)=9(5y+9) => 8x +4=45y+81 => 8x - 45y =81-4 => 8x - 45y = 77

7x + 56y = 31x (8) => 56x + 448y = 248

8x - 45y = 77 x(-7) => -56x +315y = - 539

763y = 291 => y = 291/763

calculo de x :

7x +56(291/763) =31

5341x + 16296 = 23653

5341x = 23653 - 16296

5341x = 7357

x= 7357/5341

e fui

Explicação passo-a-passo: