解方程组2(x-1)-3(y+2)=4,1/2(x+1)-1/3(2y+5)=1
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解方程组2(x-1)-3(y+2)=4,1/2(x+1)-1/3(2y+5)=1
![解方程组2(x-1)-3(y+2)=4,1/2(x+1)-1/3(2y+5)=1](/uploads/image/z/19985284-28-4.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B%E7%BB%842%28x-1%29-3%28y%2B2%29%3D4%2C1%2F2%28x%2B1%29-1%2F3%282y%2B5%29%3D1)
2(x-1)-3(y+2)=4
1/2(x+1)-1/3(2y+5)=1
2x-2-3y-6=4
3(x+1)-2(2y+5)=6
2x-3y=12 ①
3x-4y=13 ②
②-①得x-y=1 ③
③*2-①得
y=-10
x=y+1=-9
所以x=-9,y=-10
1/2(x+1)-1/3(2y+5)=1
2x-2-3y-6=4
3(x+1)-2(2y+5)=6
2x-3y=12 ①
3x-4y=13 ②
②-①得x-y=1 ③
③*2-①得
y=-10
x=y+1=-9
所以x=-9,y=-10
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