方程组2x-3y+1/2+3x-2y-3=1 x+2y+6/4-4x+2y-2/5=0
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
一道二元一次方程组!3(x+y)-4(x-y)=4,(x+y)/2+(x-y)/6=1
解二元一次方程组{3(x+y)-4(x-y)=4,x+y/2+x-y/6=1
解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1
解二元一次方程组:3(x+y)-4(x-y)=4,x+y/2+x-y/6+1
解二元一次方程组{3(x+y)-(x-y)=4,x+y/2+x-y/6=1
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
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 {(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
1/2x-2y=-74,x-6y=-12解方程组,x/5-y/2=2,2x+3y=4解方程组