4x+5y=3.5 x-1=1.8-x-6y解这个方程组
解方程组4x+5y=3.5,x-1=1.8-x-6y
5x-6y=1,2x-6y=10这个方程组怎么解?
x+6=y-x-8,2x+3y-1=y-x-8 解这个方程组
1/2x-2y=-74,x-6y=-12解方程组,x/5-y/2=2,2x+3y=4解方程组
4/(x+y)+6/(x-y)=3,9/(x-y)-1/(x+y)=1 解这个方程组
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:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
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=1
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:{二分之x+y+二分之x-y=6,4(x+y)-5(x-y)=2()