x/3+1=y 2(x+1)-y=6 解方程组,
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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
2(x+y)-3(x-y)=1 6(x+y)+(x-y)=51
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
已知:2x+y=6,x-3y=1 求7y(x-3y)(x-3y)-2(3y-x)(3y-x)
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)/4 -1 6(X+Y)=4(2X-Y)+16解方程
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
解二元一次方程 {3(x+y)-4(x-y)=-9 x+y/2+x-y/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
(x+y)(x-y)+(x-y)^2-(6x^2×y÷2y-2xy^2÷2y)其中x=-3,y=1/3
若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值