Question

opa, tenho poucas horas rsrsrs​

Answer 1

Resposta:

x-y=-2

Explicação passo-a-passo:

x+y=0

x+2y=1

x=-y

-y+2y=1

y=1

x=-1

y=1/3

portanto x-y = -1-1=-2

Answer 2

${3}^{x + y} = 1 \\ {2}^{x + 2y} = 2$

${3}^{x + y} = {3}^{0} \\ {2}^{x + 2y} = {2}^{1}$

$x + y = 0 \times ( - 1)\\ x + 2y = 1 \\ - x - y = 0 \\ x + 2y = 1 \\ y = 1 \\ x = - y = - 1$

x–y=–1–(1)=–1–1=–2