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-7x=7+4y 2x=-4+3y
x=7+4y (todo dividido entre -7) x= -4+3y (todo dividido entre 2)
2(7+4y)=-7(-4+3y) 2x-3(14/29)=-4
14+8y=28-21y 2x-42/29=-4
8y+21y=28-14 2x=-4+42/29
29y=14 2x=116+42 (todo dividido en 29)
y=14/29 2x=-74/29
x=-74/29.2
x=-74/58