Question

X-2.y=1 qual a resposta?

Answer 1

Explicação passo-a-passo:

10^574=3-2-9=908

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Answer 2

x=y-2

2x+y=-1

2.(y-2)+y=-1

2y-4+y=-1

3y-4=-1

3y=-1+4

3y=3

y=3:3

y=1