解方程组7x+4y=4 (1)3x-6y=24(2)
解方程组:4(x+1)=3(y+3) x-2y=7y-6x/3
不解方程组x+4y=6 x-3y=1求代数式7y(x-3y)的平方-2(3y-x)的立方
利用图像解方程组:(1) {2y-x=-6 {y+3x=4
解方程组7x+4y=4 (1)3x-6y=24(2)
解方程组{3x+2y=7 {6x-2y=-1 解方程组{4(x-y)=3(1-y)+2 {2/x+3/y=2
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(1) 2(x-y)/3=x+y/4-1 6(x+y)=4(2x-y)+16