13/37 . 5/12 – 7/37 . 13/6+ -1/37 . 13/4 giải rõ giúp e vs e sắp nộp r ạ 16/10/2021 Bởi Iris 13/37 . 5/12 – 7/37 . 13/6+ -1/37 . 13/4 giải rõ giúp e vs e sắp nộp r ạ
`13/37 . 5/12 – 7/37 . 13/6 + -1/37 . 13/4` `= 13/37 . 5/12 – 7/37 . 13/6 – 1/37 . 13/4` `= 13/37 . 5/12 – 13/37 . 7/6 – 13/37 . 1/4` `= 13/37 . (5/12 – 7/6 – 1/4)` `= 13/37 . (5/12 – 14/12 – 3/12)` `= 13/37 . -1` `= -13/37.` Bình luận
$\dfrac{13}{37} . \dfrac{5}{12} – \dfrac{7}{37} . \dfrac{13}{6} + \dfrac{-1}{37} . \dfrac{13}{4}$ $= \dfrac{13}{37} . \dfrac{5}{12} – \dfrac{13}{37} . \dfrac{7}{6} + \dfrac{13}{37} . \dfrac{-1}{4}$ $= \dfrac{13}{37} ( \dfrac{5}{12} – \dfrac{7}{6} + \dfrac{-1}{4} )$ $= \dfrac{13}{37} . \dfrac{-5}{6}$ $= \dfrac{-65}{222}$ Bình luận
`13/37 . 5/12 – 7/37 . 13/6 + -1/37 . 13/4`
`= 13/37 . 5/12 – 7/37 . 13/6 – 1/37 . 13/4`
`= 13/37 . 5/12 – 13/37 . 7/6 – 13/37 . 1/4`
`= 13/37 . (5/12 – 7/6 – 1/4)`
`= 13/37 . (5/12 – 14/12 – 3/12)`
`= 13/37 . -1`
`= -13/37.`
$\dfrac{13}{37} . \dfrac{5}{12} – \dfrac{7}{37} . \dfrac{13}{6} + \dfrac{-1}{37} . \dfrac{13}{4}$
$= \dfrac{13}{37} . \dfrac{5}{12} – \dfrac{13}{37} . \dfrac{7}{6} + \dfrac{13}{37} . \dfrac{-1}{4}$
$= \dfrac{13}{37} ( \dfrac{5}{12} – \dfrac{7}{6} + \dfrac{-1}{4} )$
$= \dfrac{13}{37} . \dfrac{-5}{6}$
$= \dfrac{-65}{222}$