解方程组X+Y/2=3X-2Y=10+6X+Y/4应该是(X+Y)/2=3X+2Y=(10+6X+Y)/4
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解方程组X+Y/2=3X-2Y=10+6X+Y/4应该是(X+Y)/2=3X+2Y=(10+6X+Y)/4解方程组X+Y/2=3X-2Y=10+6X+Y/4应该是(X+Y)/2=3X+2Y=(10+6
解方程组X+Y/2=3X-2Y=10+6X+Y/4应该是(X+Y)/2=3X+2Y=(10+6X+Y)/4
解方程组X+Y/2=3X-2Y=10+6X+Y/4
应该是(X+Y)/2=3X+2Y=(10+6X+Y)/4
解方程组X+Y/2=3X-2Y=10+6X+Y/4应该是(X+Y)/2=3X+2Y=(10+6X+Y)/4
合并方程组:x+y/2=3x-2y;3x-2y=10+6x+y/4;得出:x=5y/4;从而算出:x=-25/12,y=-5/3.手机打很累.
X+Y/2=3X-2Y=10+6X+Y/4
5y/2=2x
3x+9y/2=10
解得y=40/33,x=50/33
X+Y/2=3X-2Y①
X+Y/2=10+6X+Y/4②
由①得X=(5/4)Y,代入②得:
Y=5/3所以X=25/12
X+Y/2=3X-2Y
得 X=5/4Y ①
把①带入3X-2Y=10+6X+Y/4中,
得Y=-5/3 ②
把②带入①中得,
X=-25/12
解得 X=-25/12,Y=-5/3
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