解方程组4x-y=5和3(x-1)=2y-3
解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组|x+3y|+|5x-y+2|=5和2x+y=1
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:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
解方程组x:y=2:3和5x+3y=38 3y+x/y=8和9y-2x/y=9
解方程组{(x-2)(y+3)=(x+1)(y-1) {(x+1)(y+1)=(x-1)(y+5)
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
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