解方程组x/3-y/4=1,3x+2y=9
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组{4/x+y+6/x-y=3, 9/x-y-1/x+y=1
解方程组:{4/x+y+6/x-y=3 9/x-y-1/x+y=1}
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)-(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
2+3x/5+4y=9,4+6y-y=1解方程组
解方程组x/3-y/4=1,3x+2y=9
解方程组:2x-3y=9(1),7x+4y=17(2)
解方程组x+y/3=x-y/4 2x+3y=11