Các câu hỏi tương tự
B = 3/2x5 + 3/5x8 + 3/8x11 + 3/11x14
Tính B = \(\frac{3}{2x5}+\frac{3}{5x8}+\frac{3}{8x11}+\frac{3}{11x14}\)
S=1/2x5+1/5x8+1/8x11+1/11x14
ban nao tra loi nhanh mk se tick cho
x/2x5+x/5x8+x/8x11+x/11x14+...+x/32x35=33/70
Ai tự tin là mình có IQ 2000 thì trả lời hộ :
1/3 + 1/27 + 1/81 + ......... + 1/2187 ?
3/2x5 + 3/5x8 + 3/8x11 + 3/11x14 ?
1313/2121 + 165165/143143 +424242/151515?
Ai trả lời được ko 😝😝😝😝
Tính nhanh:
a. 3/4x9 + 3/9*14 +...+ 3/54x59 + 3/59x64.
b. 2/8x11 + 2/11x14 +...+ 2/23x26 + 2/26x29
Tìm x biết :
\(\dfrac{X}{2x5}+\dfrac{X}{5x8}+\dfrac{X}{8x11}+\dfrac{X}{11x14}+...+\dfrac{X}{32x35}=\dfrac{33}{70}\)
a=3/5x8+3/8x11+3/11x14+3/14x17...+3/98x101
A=\(\dfrac{3}{5x8}\)+\(\dfrac{3}{8x11}\)+\(\dfrac{3}{11x14}\)+....+\(\dfrac{3}{100x103}\)