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4x-2y=6
despejamos x,en ambas ecuaciones y despues igualamos
2x-4y=0........2x=4y......x=4y/2........x=2y
4x-2y=6......4x=2y+6........x=2y+6
4
igualamos
2y=2y+6
4
2y(4)=2y+6
8y=2y+6
8y-2y=6
6y=6
y=6/6
y=1
si y=1
2x-4y=0
2x-4(1)=0
2x-4=0
2x=4
x=4/2
x=2
respuesta: x=2 y=1