Question

gente me ajudem -6x+y=7 5x-y=-6

Answer 1

Explicação passo-a-passo:

-6x+y=7

5x-y=-6

$y = 7 + 6x \\ 5x - y = - 6 \\ \\ 5x - (7 + 6x) = - 6 \\ 5x - 7 - 6x = - 6 \\ - x = - 6 + 7 \\ - x = 1 \times ( - 1) \\ x = - 1 \\ \\ y = 7 + 6x \\ y = 7 + 6 \times ( - 1) \\ y = 7 - 6 \\ y = 1 \\ \\ (x.y) = ( - 1.1)$