2013-02-04 13:538888888a7|一级7x-5/4=3/8
1/4-1/2=3/4
1/7X(2x+14)=4-2x
12X(2-2x)=4X+4
3y-4=y+3
4/10x-3=10x+2
3X(2x+1)=12
2X(200-15x)=70+25x
(3y-1/4)-1=(5y-7)/6
(3x-5)X3=(2x-1)X2
7x-5/4=3/8
1/4-1/2=3/4
1/7X(2x+14)=4-2x
12X(2-2x)=4X+4
3y-4=y+3
4/10x-3=10x+2
3X(2x+1)=12
2X(200-15x)=70+25x
(3y-1/4)-1=(5y-7)/6
(3x-5)X3=(2x-1)X2
你实外的吧