Question

[Thạp Thất Khương]

(-3,2).-15/64+(0,8-2 4/15):3 2/3

Answer 1

[Nguyễn Lê Phước Thịnh]

\(\left(-3,2\right)\cdot\dfrac{-15}{64}+\left(0,8-2\dfrac{4}{15}\right):3\dfrac{2}{3}\)

\(=\dfrac{16}{5}\cdot\dfrac{15}{64}+\left(\dfrac{4}{5}-\dfrac{34}{15}\right):\dfrac{11}{3}\)

\(=\dfrac{3}{4}+\left(\dfrac{12}{15}-\dfrac{34}{15}\right)\cdot\dfrac{3}{11}\)

\(=\dfrac{3}{4}+\dfrac{-22}{15}\cdot\dfrac{3}{11}=\dfrac{3}{4}+\dfrac{-2}{5}=\dfrac{15}{20}-\dfrac{8}{20}=\dfrac{7}{20}\)

Answer 2

[đại ca lớp 1a]

(−3,2)⋅64−15​+(0,8−2154​):332​

\(= \frac{16}{5} \cdot \frac{15}{64} + \left(\right. \frac{4}{5} - \frac{34}{15} \left.\right) : \frac{11}{3}\)

\(= \frac{3}{4} + \left(\right. \frac{12}{15} - \frac{34}{15} \left.\right) \cdot \frac{3}{11}\)

\(= \frac{3}{4} + \frac{- 22}{15} \cdot \frac{3}{11} = \frac{3}{4} + \frac{- 2}{5} = \frac{15}{20} - \frac{8}{20} = \frac{7}{20}\)