若2x-3y=3y-4x=-5,求x,y的值
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若2x-3y=3y-4x=-5,求x,y的值
若2x-3y=3y-4x=-5,求x,y的值
若2x-3y=3y-4x=-5,求x,y的值
2x-3y=3y-4x
6x=6y
x=y
2x-3y=-5
x=y=5
x=5 y=5
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