3X+4Y=5,X-Y=5解方程组
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)=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 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2
解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27
解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7
1/2x-2y=-74,x-6y=-12解方程组,x/5-y/2=2,2x+3y=4解方程组
方程组x-2y=8,3x-4y=5,x=?,y=?
关于X,Y的方程组3X+2Y=2m+5与x-y=4m-5的解x,y满足x+2y
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
已知方程组:5x+y=3 ; ax+5y=4与方程组x