解方程组x+y=25 (1+0.18)x+(1+0.25)y=30.55
解方程组x+y=25 (1+0.18)x+(1+0.25)y=30.55
解方程组 30x=4/5y 40(x-1)=y+25
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解关于X,Y的方程组 {x+y=a (a-1)x+y=5
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
(y+1)/3=5y-x与3x-5y=25解方程组
解方程组:解方程组:|X+Y|=1|X|+2|Y|=3
解方程组{(x-2)(y+3)=(x+1)(y-1) {(x+1)(y+1)=(x-1)(y+5)
要求 解方程组:{(X-1)(Y+1)=(X+1)(Y+1){X(2+Y)-6=Y(X-4)
解方程组{4/x+y+6/x-y=3, 9/x-y-1/x+y=1
解方程组:{4/x+y+6/x-y=3 9/x-y-1/x+y=1}
数学书解方程组{2(x+y)-(x-y)=3,(x+y)-2(x-y)=1