Question

\(\dfrac{2}{3}.\dfrac{-5}{7}\)

\(\dfrac{-1}{3}.\dfrac{5}{9}\)

\(\dfrac{-2}{5}.\dfrac{10}{4}\)

\(\dfrac{-3}{7}.\dfrac{5}{15}\)

\(\dfrac{-7}{3}.\dfrac{9}{21}\)

Answer 1

a: =-10/21

b: =-5/27

c: =-20/20=-1

d: =-15/105=-1/7

e: =-63/63=-1

Answer 2

\(\dfrac{10}{21}\)

\(\dfrac{5}{27}\)

\(1\)

\(\dfrac{1}{7}\)

\(1\)