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1)-3x+6y=10 •4
2)4x+3y=-6 •3
Quedando
1)-12x+24y=40
2)12x+9y=-18
Simplificamos "12x"
Quedando
1)24y=40
2)9y=-18
Sumamos
33y=22
Y=22/33
Y=0.66
Remplazamos ..
En 1
6(0,66) -3x=10
4-3x=10
-3x=10-4 (-1)
X=6/3
X=2
Faltan 2