解方程组:{x-y=3-x,3(x-y)=5-x 解不等式组:{x-4<3(x-2),1-2x/3+1>x
解方程组:{x-y=3-x,3(x-y)=5-x 解不等式组:{x-4<3(x-2),1-2x/3+1>x
解不等式,方程组{4x-2y=-1 {x+4y=2解不等式组{2分之x<2(x-1){3分之x>5分之x+2求满足不等式
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
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
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
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+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12)
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组