\(\frac{5}{2.7}+\frac{5}{7.12}+\frac{5}{12.17}+\frac{5}{22.27}\)
\(=\frac{1}{2}-\frac{1}{7}+\frac{1}{7}-\frac{1}{12}+\frac{1}{12}-\frac{1}{17}+\frac{5}{22.27}\)
\(=\frac{1}{2}-\frac{1}{17}+\frac{5}{22.27}\)
\(=\frac{2270}{5049}\)
5/2.7 + 5/7.12 + 5/12.17 + 5/17.22 + 5/22.27
/ là phâ`n
1) Tính nhanh
\(\frac{5}{2.7}+\frac{5}{7.12}+\frac{5}{12.17}+\frac{5}{17.22}+\frac{5}{22.27}+\frac{5}{27.32}+\frac{5}{32.37}\)
Tìm x biết
5x/2.7 + 5x/7.12 + 5x/12.17 + 5x/17.22 + 5x/22.27 + 5x/27.32= 945
giải chi tiết giùm mình nha, cần gấp lắm
Tính tổng:
S2= 5/ 2.7 + 5/7.12+ 5/12.17 + 5/17.22 + 5/ 22. 27
B=5/2.7+5/7.12+5/12.17+5/17.22+5/22.29
\(\frac{5}{2.7}+\frac{5}{7.12}+\frac{5}{12.17}+\frac{5}{17.22}+\frac{5}{22.29}=?\)
Tính tổng:
C=\(\frac{3}{1.5}+\frac{3}{5.9}+\frac{3}{9.13}+...+\frac{3}{101.105}\)
D=\(\frac{4}{2.7}+\frac{4}{7.12}+\frac{4}{12.17}+...+\frac{4}{102.107}\)
E=\(\frac{5}{3.7}+\frac{5}{7.11}+\frac{5}{11.15}+...+\frac{5}{103.107}\)
F=\(\frac{6}{2.7}+\frac{6}{7.12}+\frac{6}{12.17}+...+\frac{6}{102.107}\)
\(\frac{5}{2.7}.\frac{5}{7.12}.\frac{5}{12.17}...\frac{2}{907.1002}\)
7/ 2.7 + 7/7.12 + 7/12.17+ ....+ 7/102. 107
Giải nhanh giúp mình với ạ mình cần gấp. Mình cảm ơn ạ
