方程组4/x+2=3/y+1 3x-2y=1
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方程组4/x+2=3/y+1 3x-2y=1
4/x+2=3/y+1
4(y+1)=3(x+2)
4y+4=3x+6
3x-4y=-2 (1)
3x-2y=1 (2)
(2)-(1)
2y=3
y=3/2
x=(4y-2)/3=4/3
4(y+1)=3(x+2)
4y+4=3x+6
3x-4y=-2 (1)
3x-2y=1 (2)
(2)-(1)
2y=3
y=3/2
x=(4y-2)/3=4/3
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
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