Question

4/5 + -3/2 . 3  1/4

 

Answer 1

không rõ đề

Answer 2

\(=\dfrac{4}{5}+\dfrac{-3}{2}.\dfrac{13}{4}=\dfrac{4}{5}+\dfrac{-39}{20}=\dfrac{16}{20}-\dfrac{39}{20}=\dfrac{-23}{20}\)

Answer 3

\(\dfrac{4}{5}+\dfrac{-3}{2}.3\dfrac{1}{4}\)

= \(\dfrac{4}{5}+\dfrac{-3}{2}.\dfrac{13}{4}\)

= \(\dfrac{4}{5}+\dfrac{-39}{8}\)

=\(\dfrac{32}{40}+\dfrac{-195}{40}\)

= \(\dfrac{32+\left(-195\right)}{40}\)

= \(\dfrac{-163}{40}\)

Answer 4

\(\dfrac{4}{5}+\dfrac{-3}{2}\cdot3\dfrac{1}{4}\)

\(=\dfrac{4}{5}+\dfrac{-3}{2}\cdot\dfrac{13}{4}\)

\(=\dfrac{4}{5}-\dfrac{39}{8}=-\dfrac{163}{40}\)