Question

Tính bằng cách thuận tiện nhất 

3 * 1/4 + 1/12 * 1/4 + 35/12 *1/4

Answer 1

\(3\cdot\frac{1}{4}+\frac{1}{12}\cdot\frac{1}{4}+\frac{35}{12}\cdot\frac{1}{4}\)

\(=(3+\frac{1}{12}+\frac{35}{12})\cdot\frac{1}{4}\)

\(=(3+\frac{36}{12})\cdot\frac{1}{4}\)

\(=(3+3)\cdot\frac{1}{4}\)

\(=6\cdot\frac{1}{4}=\frac{6}{4}\)