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5x-3y=9
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13x=39
x=39/13
x=3
∴x=3
Remplazamos en la ecuación:)
8x₊3y=30
8(3)₊3y=30
24₊3y=30
3y=30-24
3y=6
y=6/2
y=3
Rpta: Cs(3;3)