14/15-1/4x+2/3x=5/3 X=? (急!!!!)
来源:百度知道 编辑:UC知道 时间:2024/05/18 04:58:51
14/15 - 1/4x + 2/3x = 5/3
2/3x -1/4x = 5/3-14/15
两边都分别通分:
(12-8)/12x = (25-14)/15
5/12x = 11/15
5/4x = 11/5
x = 25/44
你说"x"到底在分子上还是分母上?我是按分母上算的.
如果"x"在分子上结果正好分子分母相反.
132/75
1/11+1/12+1/13+1/14+1/15=?
1/(12×13)+1/(13×14)+1/(14×15)。。。+1/(19×20)=?
1/1/10 1/11 1/12 1/13 1/14 1/15 1/16 1/17 1/18 1/19化简后整数部分是多少
1/11+1/12+1/13+1/14+1/15+1/16+1/17+1/18+1/19+1/20=?
1/1*2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+1/7*8+1/8*9+1/9*10+1/10*11+1/11*12+1/12*13+1/13*14+1/14*15=?
公务员题1/(12*13)+1/(13*14)+1/(14*15)+.......+1/(19*20)
14/15-1/4x+2/3x=5/3 X=? (急!!!!)
1/3+1/15+1/35+1/63+...+1/15*17
1/3,1/15,1/35,(?)
1/3+1/15+1/35+1/36+1/99=