方程组 (3x+1)/5-(3y+2)/4=0和(2x-1)/5-(3y-2)/4=0
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
10/x+y+3/x-y=-5 15/x+y-2/x-y=-1(用换元法解此方程组)
已知方程组(4x-5y+2x=0和x+4y-3z=0)则x:y:Z的值为
解下列方程组(1){y=1-x,4x-3y=5 (2){2x-y=3,3x+y-1=0 (3)2x+3y=-4,2x-4
解下列方程组(1){y=1-x,4x-3y=5 (2){2x-y=3,3x+y-1=0 (3){2x+3y=-4,2x-
解方程组(1)2x-3y=10,-4x+y=5 (2)3x-2y=15,5x-4y=23
解方程组(X+Y)/2+(X—Y)/3=6和4(X+Y)-5(X-Y)=2
2(x-y)/3-x+y/4=-1 2(5x+3y)-8(x+2y)=-16 二元一次方程组
解方程组X+Y除以2+X—Y除以3=6和4(X+Y)—5(X—Y)=2
解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1
解方程组:①4x+3y-5=0,x-2y-4=0.②5x-2=2(y-1),2(x-2)+(y-1)③0.2x+0.5y
解下列方程组:①{3x+5y+42,x/2=y/3.②{x+y/5=x-y/3=2.③3(x-1)-4(y-4)=0,5