方程组6/(x+y)=1 6/(x-y)=3的解
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已知方程组{2x+y=6,x-3y=1,不解方程组,求7y(x-3y)²-(3y-x)²的值.已知方程组{2x+y=6,{x-3y=1.不解方程组,求7y(x-3y)²-(3y-x)²的值.已知方程组{2x+y=6,{x-3y=1.不解方程组,求7y(x-3y)²-(3y-x)³
用加减法解方程组:{(x+y)/6+(x-y)/10=3 (x+y)/6+(y-x)/10=-1
2/x-y + 6/x+y = 11/10 分式方程组 4/x-y - 6/x+y =1/10
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
数学一元二次方程组1.4/x+y+6/x-y=39/x-y-1/x+y=1用换元法求
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