3) X + Y = 2 .........(1)
2X + 2Y =4 ......(2)
doy 100 puntos + corona
2X + 2Y =4 ......(2)
doy 100 puntos + corona
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Explicación paso a paso:
x+y=2
2x+2y=4
2{x+y]=4
2×2=4
4=4