解方程组(1)4x+y=4.5和x-1=1.8-x-6y (2)5\x-2\y=-4和15\x-7\y=-3
解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1
解方程组(1)4x+y=4.5和x-1=1.8-x-6y (2)5\x-2\y=-4和15\x-7\y=-3
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
已知方程组2X+Y=6和X-3Y=1不解方程组,求7Y(X-3Y)^2-(3Y-X)^3
解方程组:(x-1)(y-2)=xy和x(x+2)-4y(y-1)=(x+2y)(x-2y)
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
怎么解二元一次方程组2(x-y)/3-x+y/4=-1和6(x+y)-4(2x-y)=16
解方程组(X+Y)/2+(X—Y)/3=6和4(X+Y)-5(X-Y)=2
解方程组X+Y除以2+X—Y除以3=6和4(X+Y)—5(X—Y)=2