解方程组：6/x+6/y=1/28/x-3/y=3/10

解方程组：6/x+6/y=1/28/x-3/y=3/10 3/x+y+2/x-y=6,3（x+y)-2(x-y)=28解这个方程组 用加减法解方程组:{(x+y)/6+(x-y)/10=3 (x+y)/6+(y-x)/10=-1 要求 解方程组：｛(X-1)(Y+1)=(X+1)(Y+1)｛X(2+Y)-6=Y(X-4) 解方程组：{4/x+y+6/x-y=3 9/x-y-1/x+y=1} 解方程组{4/x+y+6/x-y=3, 9/x-y-1/x+y=1 解方程组 一题 4/x+y+6/x-y=39/x-y-1/x+y=1 解分式方程组：4/（x+y）+6/(x-y)=39/(x-y)-1/(x+y)=1 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2(x-y)/3-x+y/4=-1 6(x-y)-4(2x-y)=16 解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1kkkkkkkk 解方程组6(x-y)-7(x+y)=21 2(x-y)-5(x+y)=-1 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：2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16