解方程组:0.2X+0.3Y=4.6 0.7X-0.5Y=0.6
解方程组:0.2X+0.3Y=4.6 0.7X-0.5Y=0.6
解方程组 0.2X+0.3y=4.6 0.7x-.5y=.6
解方程组{0.2x+0.3y=-0.1,0.5x+(y/3)=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+y)(x-2y)=-5 (x-y)(x+2y)=7
解方程组.0.7x+0.3y=1 -7x+2y=5
解方程组:0.6x-0.5y=2.7 1.8x+y=0.6
解二元一次方程组;0.6x-0.5y=2.7,1.8x+y=0.6
解方程组{2x+3y=-1,x/0.2+y/0.3=1
解方程组(1)x/2+y/3=2 0.2x+0.3y=2.8
0.3x+0.2y=1 解方程组{ 5x+7y=40
解方程组0.5x+0.8y=4.7 0.6x+1.2y=6.