解方程组 2x-3y=4 5x-3y=1 y-1=3(x-2) y+4=2(x+1)
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解方程组2x-3y=45x-3y=1y-1=3(x-2)y+4=2(x+1)解方程组2x-3y=45x-3y=1y-1=3(x-2)y+4=2(x+1)解方程组2x-3y=45x-3y=1y-1=3(
解方程组 2x-3y=4 5x-3y=1 y-1=3(x-2) y+4=2(x+1)
解方程组 2x-3y=4 5x-3y=1 y-1=3(x-2) y+4=2(x+1)
解方程组 2x-3y=4 5x-3y=1 y-1=3(x-2) y+4=2(x+1)
2x-3y=4.1)
5x-3y=1.2)
2)-1),得3x=-3
x=-1.3)
将3)代入1),得-2-3y=4
-3y=6
y=-2
所以,x=-1,y=-2;
y-1=3(x-2) .4)
y+4=2(x+1).5)
5)-4),得:5=-x+2+6
x=3.6)
将6)代入4),得:y-1=3
y=4
所以,x=3,y=4;
x=3 y=4
似乎任意两个即可求解
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