Question

 

Answer 1

\(A=\dfrac{3}{2}.\left(\dfrac{-2}{9}:\dfrac{1}{3}+\dfrac{4}{21}\right)-\dfrac{-3}{7}\)
\(A=\dfrac{3}{2}.\left(\dfrac{-2}{3}+\dfrac{4}{21}\right)+\dfrac{3}{7}\)
\(A=\dfrac{3}{2}.\dfrac{-10}{21}+\dfrac{3}{7}\)
A\(=-\dfrac{5}{7}+\dfrac{3}{7}=\dfrac{-2}{7}\)