Question

x+y=4 ,x+2y=6,então x e y e ?​

Answer 1

x + 4 = y

x = (4 - y)

x + 2y = 6

4 - y + 2y = 6

4 + y = 6

y = 6 - 4

y = 2

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x + y = 4

x + 2 = 4

x = 4 - 2

x = 2