AN

( 3/8 + -1/4 +5/12 ) : 2/3

H24
5 tháng 5 2023 lúc 21:07

\(\left(\dfrac{3}{8}-\dfrac{1}{4}+\dfrac{5}{12}\right):\dfrac{2}{3}=\left(\dfrac{9}{24}-\dfrac{6}{24}+\dfrac{10}{24}\right):\dfrac{2}{3}=\dfrac{13}{24}:\dfrac{2}{3}=\dfrac{13}{24}\times\dfrac{3}{2}=\dfrac{13}{16}\)

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DK
5 tháng 5 2023 lúc 21:11

\(\left(\dfrac{3}{8}+\dfrac{-1}{4}+\dfrac{5}{12}\right):\dfrac{2}{3}\) 

\(\dfrac{13}{24}:\dfrac{2}{3}\)

\(\dfrac{13}{16}\)

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H24
5 tháng 5 2023 lúc 21:20

\(\left(\dfrac{3}{8}+\dfrac{-1}{4}+\dfrac{5}{12}\right):\dfrac{2}{3}=\left(\dfrac{9}{24}-\dfrac{6}{24}+\dfrac{10}{24}\right).\dfrac{3}{2}=\dfrac{13}{24}.\dfrac{3}{2}=\dfrac{39}{48}=\dfrac{13}{16}\)

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