这问题也来问,帮你算了一下X=2/3 y=4/3
3X+2Y=5X+2 2(3X+2Y)=2X+8 求 X Y
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{X+2Y/2+3X-Y/3=5{0.2(X+2Y)+0.8(3X-Y)=4
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y=-2x x+y=8 3x-y=10 x+y=0 -2x+7x=24 3x-2y=4 2y-5x=12 2x-x=3x