Question

resolva o problema: x - y = 6 x + y = -7

Answer 1

Resposta:

Explicação passo-a-passo:

x-y=6

x+y=-7

_______

2x+0=-1

x=-1/2

x-y=6

-1/2-y=6

-y=6+1/2

-y=12/2-1/2

-y=11/2 (-1)

y=-11/2