03x-y=1 0.2x-0.5y=19 解方程组
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{0.2x+0.3y=-0.1,0.5x+(y/3)=1
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(x+y)(x-2y)=-5 (x-y)(x+2y)=7
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}
解方程组:0.2X+0.3Y=4.6 0.7X-0.5Y=0.6
解方程组 X/0.5+Y/0.2=20 X/10+2/Y=2/3