Question

\(\dfrac{9}{14}:\dfrac{3}{7}+\dfrac{5}{6}=\)

\(\dfrac{4}{7}x\left(4-\dfrac{7}{3}\right)\)

giup mik đi. đúng mik tick choa/33☺

Answer 1

`9/14 : 3/7 + 5/6 = 3/98 + 5/6 = 127/147`

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`4/7 xx (4 - 7/3) = 4/7 xx 5/3 = 20/21`

Answer 2

\(\dfrac{9}{14}:\dfrac{3}{7}+\dfrac{5}{6}=\dfrac{9}{14}\times\dfrac{7}{3}+\dfrac{5}{6}=\dfrac{3}{2}+\dfrac{5}{6}=\dfrac{7}{3}\)

\(\dfrac{4}{7}\times\left(4-\dfrac{7}{3}\right)=\dfrac{4}{7}\times\dfrac{5}{3}=\dfrac{20}{21}\)

Answer 3

\(=\dfrac{3\times3}{2\times7}\times\dfrac{7}{3}+\dfrac{5}{6}=\dfrac{3}{2}+\dfrac{5}{6}=\dfrac{9}{6}+\dfrac{5}{6}=\dfrac{14}{6}=\dfrac{7}{3}\)

b)\(=\dfrac{4}{7}\times\dfrac{5}{3}=\dfrac{20}{21}\)