\(1-\frac{1}{3}-\frac{1}{6}-\frac{1}{12}-\frac{1}{24}\)
\(=1-\frac{1}{3}+\frac{1}{3}-\frac{1}{6}+\frac{1}{6}-\frac{1}{12}+\frac{1}{12}-\frac{1}{24}\)
\(=1-\frac{1}{24}\)
\(=\frac{23}{24}\)
\(1-\frac{1}{3}-\frac{1}{6}-\frac{1}{12}-\frac{1}{24}\)
\(1-\frac{1}{3}+\frac{1}{3}-\frac{1}{6}+\frac{1}{6}-\frac{1}{12}+\frac{1}{12}-\frac{1}{24}+\frac{1}{24}\)
\(1-\frac{1}{24}=\frac{23}{24}\)
đây đâu phải toán lớp 4