解方程组2x-3y=0,3x+4y-2=0
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解方程组 y=2x x+y=3
解方程组3x+5(x+y)=2 3y-2(x+y)=4
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组x+y/3=x-y/4 2x+3y=11
解方程组,x+y/2=3x-2y=10+6x+y/4,
解方程组,(x+y)^2-3(x+y)=0和x-y=1
先化简再求值; 解方程组 x(x-y)-y(x+y)+2xy 其中x=2 ,y=-22.x[x-x(x-1)],其中x=-2解方程组4x+3y=12x-y=32.y+1=2x 4x-y=2 3.2x+2y=0 2x-y+24=0
解方程组:2(x +y)-3(x-y)=3;4(x+ y)+ 3(x-y)=15
解方程组;x+y/2=x-y/3=6 4(x+y)-3(x-y)=-20
解方程组 4(x+y)-(2x-y)=14 ,3(x+y)-2(2x-y)=8
解方程组2(x-y)/3-x+y/4=-1 6(x-y)-4(2x-y)=16
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
解方程组⑴(x+y)/2-(x-y)/3=6,⑵3(x+y)=4(x-y)
解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3
解方程组4(x+y)-3(x-y)=14;(x+y)/2+(x+y)/3=6
解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2
解二元一次方程组{x+y/2+x-y/3=6,4(x+y)-2=5(x-y)
解方程组2分之x+y+3分之x-y=6 4(x+y)-5(x-y)=2