9y=3x-(x-1),4(x+y)-(x+4)=8y解方程组
9y=3x-(x-1),4(x+y)-(x+4)=8y解方程组
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{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3
解方程组24/(x+y) +24/(x-y) = 7/3 ,8/(x+y) +18/(x-y) = 4/3
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
解二元一次方程组:3(x+y)-4(x-y)=4,x+y/2+x-y/6+1
解二元一次方程组{3(x+y)-(x-y)=4,x+y/2+x-y/6=1
方程组x-2y=8,3x-4y=5,x=?,y=?