Các câu hỏi tương tự
2/5x8 + 2/8x11 + 2/11x14 + ... + 2/95x98
\(\frac{2}{5x8}+\frac{2}{8x11}+\frac{2}{11x14}+...+\frac{2}{95x98}\)
\(\frac{2}{5x8}+\frac{2}{8x11}+\frac{2}{11x14}+...+\frac{2}{95x98}\)
x/2x5+x/5x8+x/8x11+x/11x14+...+x/32x35=33/70
Tìm x biết :
\(\dfrac{X}{2x5}+\dfrac{X}{5x8}+\dfrac{X}{8x11}+\dfrac{X}{11x14}+...+\dfrac{X}{32x35}=\dfrac{33}{70}\)
A=\(\dfrac{3}{5x8}\)+\(\dfrac{3}{8x11}\)+\(\dfrac{3}{11x14}\)+....+\(\dfrac{3}{100x103}\)
a=3/5x8+3/8x11+3/11x14+3/14x17...+3/98x101
B = 3/2x5 + 3/5x8 + 3/8x11 + 3/11x14
1/5x8+1/8x11+1/11x14+...+1/mx(m+3)=101/1540