Question

Bài 162

A. 9/2 - 2/3 - 3/4=

B. 5/8 + 4/9 - 1/3=

Answer 1

\(A.\dfrac{9}{2}-\dfrac{2}{3}-\dfrac{3}{4}=\dfrac{54}{12}-\dfrac{8}{12}-\dfrac{9}{12}=\dfrac{54-8-9}{12}=\dfrac{37}{12}\)

\(B.\dfrac{5}{8}+\dfrac{4}{9}-\dfrac{1}{3}=\dfrac{45}{72}+\dfrac{32}{72}-\dfrac{24}{72}=\dfrac{45+32-24}{72}=\dfrac{53}{72}\)