Question

a)3/8x2/5:3/4

b)5/3+9-3/8

mình cần gấp ai làm nhanh giúp mình với

Answer 1

\(a,\dfrac{3}{8}\times\dfrac{2}{5}:\dfrac{3}{4}\)

\(=\dfrac{3}{8}\times\dfrac{2}{5}\times\dfrac{4}{3}\)

\(=\dfrac{3\times2\times4}{8\times5\times3}\)

\(=\dfrac{1\times1\times1}{1\times5\times1}\)

\(=\dfrac{1}{5}\)

\(b,\dfrac{5}{3}+9-\dfrac{3}{8}\)

\(=\dfrac{32}{3}-\dfrac{3}{8}\)

\(=\dfrac{256}{24}-\dfrac{9}{24}\)

\(=\dfrac{247}{24}\)