2x-4y和3x+2y解方程组咋做?
解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1
方程组x/2+y/3=13 x/3-y/4=3 x 和y 的解是多少
解方程组X+Y/2=3X-2Y=10+6X+Y/4
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组x+y/3=x-y/4 2x+3y=11
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
解方程组x:y=2:3和5x+3y=38 3y+x/y=8和9y-2x/y=9
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
解二元一次方程组:3(x+y)-4(x-y)=4,x+y/2+x-y/6+1
3(x+y)—4(x-y)=4,(x+y/2)+(x-y/6)=1.解方程组