方程组x-2y=8,3x-4y=5,x=?,y=?

方程组x-2y=8,3x-4y=5,x=?,y=? 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4x+y=3 3x+2y=5,则x-y= 解方程组3x+5(x+y)=2 3y-2(x+y)=4 解下列方程组 3x=4(x-y) x-8(x-y)=5 解联立方程组 x/x+y=5/8 x/x+y+6=2/3 y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,无 解方程组 4(x+y)-(2x-y)=14 ,3(x+y)-2(2x-y)=8 解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3 解方程组8/(x+y) +(x-y)/2=3,6/(x+y)-(x-y)/4=1 解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2 解二元一次方程组{x+y/2+x-y/3=6,4(x+y)-2=5(x-y) 解方程组2分之x+y+3分之x-y=6 4(x+y)-5(x-y)=2 解方程组 {(x+y)/2+(x-y)/3=6 5(x+y)-2(x-y)=4 3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组 x+y/2+x-y/3=6,4(x+y)-5(x-y)=2用加减消元法解方程组 解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27 解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27全过程、快