Question

-(\(\dfrac{3}{54}\)+\(\dfrac{3}{4}\))-(\(\dfrac{-3}{4}\)+\(\dfrac{2}{5}\))

Answer 1

\(-\left(\dfrac{3}{54}+\dfrac{3}{4}\right)-\left(\dfrac{-3}{4}+\dfrac{2}{5}\right)=-\dfrac{3}{54}-\dfrac{3}{4}+\dfrac{3}{4}-\dfrac{2}{5}=-\dfrac{3}{54}-\dfrac{2}{5}=-\dfrac{1}{18}-\dfrac{2}{5}=\dfrac{-5-36}{90}=\dfrac{-41}{90}\)

Answer 2

\(-\left(\dfrac{3}{54}+\dfrac{3}{4}\right)-\left(\dfrac{-3}{4}+\dfrac{2}{5}\right)\)

\(=-\dfrac{3}{54}-\dfrac{3}{4}+\dfrac{3}{4}-\dfrac{2}{5}\)

\(=-\dfrac{3}{54}-\dfrac{2}{5}\)

\(=-\dfrac{1}{18}-\dfrac{2}{5}\)

\(=\dfrac{-41}{90}\)

Answer 3

\(-\left(\dfrac{3}{54}+\dfrac{3}{4}\right)-\left(\dfrac{-3}{4}+\dfrac{2}{5}\right)\)

\(=-\left(\dfrac{29}{36}\right)-\left(-\dfrac{7}{20}\right)\)

\(=-\dfrac{41}{90}\)