解方程组3(x+1)=4(y+2) 2y-1/3=3x-5/4
解方程组{ 3x-4y(x-y)=3 { 2x-3y=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:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
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:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
解方程组2x-5/x-2+2y-3/y-1=2.3x-4y=1
2+3x/5+4y=9,4+6y-y=1解方程组
解方程组:(3x+2y)/3=(5x+3y)/4=-1
解方程组{x/3+y/2=1/6、y/3-x/4=-5/6