Question

Answer 1

a: \(=\dfrac{-4}{9}\left(\dfrac{7}{15}+\dfrac{8}{15}\right)=\dfrac{-4}{9}\)

b: \(=\dfrac{-5}{4}\left(\dfrac{16}{25}+\dfrac{9}{25}\right)=\dfrac{-5}{4}\)

c: \(=2+\dfrac{13}{27}+3+\dfrac{14}{27}-\dfrac{7}{15}-\dfrac{8}{15}\)

=5+1-1

=5

e: \(=11+\dfrac{1}{4}-2-\dfrac{5}{7}-5-\dfrac{1}{4}\)

=4-5/7=23/7