Question

Por favor respond a minha Pergunta
X+y=11
2x-4y=10

Answer 1

x + y = 11 (*-2)
2x - 4y = 10
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-2x - 2y = -22
2x - 4y = 10
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\ - 6y = -12
    y = 12/6
    y = 2

2x - 4y = 10
2x - 4(2) = 10
2x - 8 = 10
2x = 10 + 8
2x = 18
x = 18/2
x = 9

BONS ESTUDOS!