1/6+1/7+1/8+1/9=?/? X/X=几分之几
来源:百度知道 编辑:UC知道 时间:2024/09/20 23:29:40
请用分数解答! 急求!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
最基本的方法是通分,将各分数的分母变成它们的最小公倍数:6、7、8、9的最小公倍数是7*8*9=504,于是,1/6=84/504,1/7=72/504,1/8=63/504,1/9=56/504,它们相加=275/504 。
等于275/504
1/6+1/7+1/8+1/9
=84/504+72/504+63/504+56/504
=275/504
1+1/2+1/3+1/4+1/5+1/6+1/7+1/8+......+1/100 = ?
(1/2-1)*(1/3-1)*(1/4-1)*(1/5-1)*(1/6-1)*(1/7-1)*(1/8-1)*(1/9-1)*(1/10-1)
1/2+1/3+1/4+1/5+1/6+1/7+.......+1/99+1/100=?
1/2+1/3+1/4+1/5+1/6+1/7+……+1/2000+1/2001
(-72)*(3/4-1/6-7/9)
1/5×1/6+1/6×1/7+1/7×1/8+1/8×1/9+1/9×1/10的简便方法是什么?
(3*4*5*6*7*8)(1/3+1/4+1/5+1/6+1/7+1/8)
数学问题:1/5+1/6+1/7+1/8+......+1/n=?
1/3+1/4+1/5+1/6+1/7的整数部分是几?
1/3+1/4+1/5+1/6+1/7 用哪个公式解?