X=350/3 Y=50
6x+5y=9503x+2y=450
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相关问题
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x+y/2+x-y/3=5/6;x=y/6-x-y/3=1/2
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x+y=1000 y-x=450
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x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2
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计算：(6x+5y)^2-(6x-5y)^2
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6x-5y=-2 5x+6y=-22
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（1){5x-3y=5 6x+2y=6 （2）{3x+2y=5x+2 2（3x+2y）=2x+8（3）{x+3/3+y+
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- {5x-2y=3{x+6y=7- {x+2y=0{3x+4y-6=0- {x-y=5{2x=15-3y- {3x-2
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(x+y)/4=(x-y)/5=(3x-2y+5)/6
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x-3y=2 -2x+6y=5 和 x-3y=2 -2x+6y=-4
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已知-X+2Y=6,则3(X-2Y)(X-2Y)-5(X-2Y)+6=（ ）