Question

Answer 1

5/9

Answer 2

\(\dfrac{5}{9}.\dfrac{7}{13}+\dfrac{5}{9}.\dfrac{9}{13}+\dfrac{3}{13}.\dfrac{-5}{9}\\ =\dfrac{5}{9}.\dfrac{7}{13}+\dfrac{5}{9}.\dfrac{9}{13}+\dfrac{-3}{13}.\dfrac{5}{9}\\ =\dfrac{5}{9}.\left(\dfrac{7}{13}+\dfrac{9}{13}+\dfrac{-3}{13}\right)\\ =\dfrac{5}{9}.\dfrac{13}{13}\\ =\dfrac{5}{9}.1\\ =\dfrac{5}{9}\)

Answer 3

\(\dfrac{5}{9}\)

Answer 4

59.713+59.913+313.−59=59.713+59.913+−313.59=59.(713+913+−313)=59.1313=59.1=59