100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 nha bạn hjhj o
=\(\frac{1}{1}-\frac{1}{4}+\frac{1}{4}-\frac{1}{7}+\frac{1}{7}-\frac{1}{10}\)
=\(\frac{1}{1}-\frac{1}{10}\)
=\(\frac{10}{10}-\frac{1}{10}\)
=\(\frac{9}{10}\)
\(\frac{1}{1.4}\) + \(\frac{1}{4.7}\) + \(\frac{1}{7.10}\)
= 1 - \(\frac{1}{4}\) + \(\frac{1}{4}\) - \(\frac{1}{7}\) + \(\frac{1}{7}\) - \(\frac{1}{10}\)
= 1 - \(\frac{1}{10}\)
= \(\frac{9}{10}\)
đùa thui :3
\(1-\frac{1}{4}+\frac{1}{4}-\frac{1}{7}+\frac{1}{7}-\frac{1}{10}\)
\(1-\frac{1}{10}\)
\(\frac{9}{10}\)
mình nhá <3 :3
\(\frac{1}{1.4}+\frac{1}{4.7}+\frac{1}{7.10}\)
\(=1-\frac{1}{4}+\frac{1}{4}-\frac{1}{7}+\frac{1}{7}-\frac{1}{10}\)
\(=1-\frac{1}{10}\)
\(=\frac{9}{10}\)
\(\frac{1}{1.4}+\frac{1}{4.7}+\frac{1}{7.10}\)
\(=1-\frac{1}{4}+\frac{1}{4}-\frac{1}{7}+\frac{1}{7}-\frac{1}{10}\)
\(=1-\frac{9}{10}\)
\(=\frac{1}{10}\)