Question

sistema 2x = 3y / y = 2x +4

Answer 1

2X = 3Y

2X + 4=Y    (.-1)

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2X = 3Y

-2X - 4 = -Y

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-4 = 2Y

Y= -2

2X = 3. (-2)

X = -3

S = {-3,-2}