解方程组2x-5y=9 5x+4y=6

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 解方程组:{二分之x+y+二分之x-y=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 2+3x/5+4y=9,4+6y-y=1解方程组 解方程组2x-5y=9 5x+4y=6 解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7 解方程组 2x+y=3,x+2y=-6解方程组 x+5y=4,3x-6y=5 1/2x-2y=-74,x-6y=-12解方程组,x／5-y／2=2,2x+3y=4解方程组 解方程组：｛4x+5(x-y)=30,4y-3(x-y)=6 x+y+xy=5 (x^2)y+x(y^2)=6 解方程组 解方程组3x+5(x+y)=2 3y-2(x+y)=4 y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,无 解方程组 x+y/5+x-y/2=7 4(x+y)-5(x-y)=2 解方程组 3(x+y)-2(x-y)=9,5(x+y)+2(x-y)=-1 解方程组:{3(x+y)-2(x-y)=9,5(x+y)+2(x-y)=-1}