Question

me ajudem: x + y + 2x + y=​

Answer 1

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Answer 2

Resposta:

y - y =2x-x

y= x- y

x=-y-y

x=-2y. substituindo teremos

x+y=2x-y

-2y+y=2.-2y-y

-y=-4y-2y

-y=-6y

-6y+y=

-5y

-y=5(-1)

y=-5

logo

x+y=2x-y

x+(-5)=2x-(-5)

x-5= 2x+5

x-2x=0

x=-1