Question

Dados os pares (x+2y,2x-y)=(1/8) qual o valor de x e y

Answer 1

{x+2y=1

{2x-y=8 ===> *(2) ↓

{x +2y=1

{4x-2y=16

----------------- (+)

5x = 17

x = 17/5 ✓

{2x-y = 8

y= 2x -8

y= 2(17/5) -8

y= 34/5 -8 = -40+34/5= -6/5 ✓