解方程组 2x+3y=1① 3x-6y=7②,用代入消元法
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解方程组2(x-y)/3-x+y/4=-1 6(x-y)-4(2x-y)=16
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 解方程组
解方程组﹛2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51
解二元一次方程组3(x+y)-4(x-y)=4 x+y/2+x-y/6=1
解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1kkkkkkkk
解二元一次方程组{3(x+y)-(x-y)=4,x+y/2+x-y/6=1
解方程组3(x+y)-4(x-y)=4,x+y除以2+x-y除以6=1
解方程组{2(x-y)/3 - x+y/4=-1 6(x+y)-41(x-y)=12
解方程组8/(x+y) +(x-y)/2=3,6/(x+y)-(x-y)/4=1
解二元一次方程组:3(x+y)-4(x-y)=4,x+y/2+x-y/6+1x+y/2+x-y/6+1=1
二元一次方程组 2(X+Y)-(X-Y)=3 (X+Y)-2(X-Y)=1 解方程组二元一次方程组 2(X+Y)-(X-Y)=3 (X+Y)-2(X-Y)=1
解方程组{x/3+(y-x)/2=2 y-1/2=x-6
1/2x-2y=-74,x-6y=-12解方程组,x/5-y/2=2,2x+3y=4解方程组
x+6=y-x-8,2x+3y-1=y-x-8 解这个方程组x+6=y-x-8,2x+3y-1=y-x-8解这个方程组
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组,x+y/2=3x-2y=10+6x+y/4,
解方程组,(x+y)^2-3(x+y)=0和x-y=1