Question

4/7 + 3/7 : 5/14                                                           7/12 - 1/12 nhân 4/3 nhân 27/16

Answer 1

giúp mình với

Answer 2

Answer 3

a)\(=\dfrac{4}{7}+\dfrac{3}{7}\times\dfrac{14}{5}=\dfrac{4}{7}+\dfrac{6}{5}=\dfrac{20}{35}+\dfrac{42}{35}=\dfrac{62}{35}\)

b)\(=\dfrac{7}{12}-\dfrac{1}{12}\times\dfrac{4}{2}\times\dfrac{27}{16}=\dfrac{7}{12}-\dfrac{3}{16}=\dfrac{19}{48}\)