方程组 (1)3x-2y=9 (2)x+2y=3
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组:解方程组:|X+Y|=1|X|+2|Y|=3
解方程组: {3x+2y=13 3x-2y=5 {x-y/3=x+y/2+1 2x-5y=9
解二元一次方程方程组 3x+5y=8 2x-3y=-1的方程组 x+y=9 3(x+y)+2x=33已知方程组2x-y=
解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12)
解方程组 2x+y(y-2x)=9 (x+y)(x+y-3)=10
解方程组{(x-2)(y+3)=(x+1)(y-1) {(x+1)(y+1)=(x-1)(y+5)
数学书解方程组{2(x+y)-(x-y)=3,(x+y)-2(x-y)=1
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
换元法解方程组3/x+y+2/x-y=17/5 2/x+y-5/x-y=1
2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 解方程组
解二元一次方程组{3(x+y)-(x-y)=4,x+y/2+x-y/6=1