3 phan 4 . ( 4 phan 3 + 2 phan 5 ) – 3 phan 4 chia ( 8 phan 9 + 16 phan 3 03/07/2021 Bởi Mackenzie 3 phan 4 . ( 4 phan 3 + 2 phan 5 ) – 3 phan 4 chia ( 8 phan 9 + 16 phan 3
Bạn tham khảo : $\dfrac{3}{4} . ( \dfrac{4}{3} + \dfrac{2}{5}) – \dfrac{3}{4} : ( \dfrac{8}{9}+\dfrac{16}{3})$ $=\dfrac{3}{4} . \dfrac{26}{15} – \dfrac{3}{4} : \dfrac{56}{9}$ $= \dfrac{3}{4} (\dfrac{26}{15} – \dfrac{56}{9})$ $= \dfrac{3}{4} . \dfrac{-202}{45}$ $= \dfrac{3.(-202)}{4.45}$ $=\dfrac{1. (-101)}{2.15}$ $= \dfrac{-101}{30}$ Bình luận
Bạn tham khảo :
$\dfrac{3}{4} . ( \dfrac{4}{3} + \dfrac{2}{5}) – \dfrac{3}{4} : ( \dfrac{8}{9}+\dfrac{16}{3})$
$=\dfrac{3}{4} . \dfrac{26}{15} – \dfrac{3}{4} : \dfrac{56}{9}$
$= \dfrac{3}{4} (\dfrac{26}{15} – \dfrac{56}{9})$
$= \dfrac{3}{4} . \dfrac{-202}{45}$
$= \dfrac{3.(-202)}{4.45}$
$=\dfrac{1. (-101)}{2.15}$
$= \dfrac{-101}{30}$
Đáp án:
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