解方程组8y+5x=84y-3x=7 方程组 因式分解 4x^3-4x^2y-(x-y)
方程组x-2y=8,3x-4y=5,x=?,y=?
解方程组24/(x+y) +24/(x-y) = 7/3 ,8/(x+y) +18/(x-y) = 4/3
解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组
解方程组 {(x+y)/2+(x-y)/3=6 5(x+y)-2(x-y)=4
解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2
解方程组:x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27全过程、快
解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27
y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,
3x+5y=8,4x+2y=-7解方程组
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1