9/12x-8/12=9/12-8/12x怎么算
7x-11=9x+4-3x怎么解答 3-5x-12=7-4x怎么解答 4x+9-8x=6-5x怎么解答
(x/8+x/12)*3+(x/12+x/24)y=x怎么解,
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
0.3x+12-0.6x=9怎么算?
7x/(5x+12)=9/7怎么算
x/25+12=x/20+8 怎么算
9/12x-8/12=9/12-8/12x怎么算
X-0.5X-12-0.5(X-0.5X-12)-8=18怎么解
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
12X+10(X-3)+8[105-(X+X-3)]=1086 怎么解
(x+12)*(x+12)=x*x+360怎么解
7x-12=8 怎么算