Question

Answer 1

\(A=\dfrac{7}{9}.\left(\dfrac{12}{19}+\dfrac{7}{19}\right)-\dfrac{2}{3}\\ =\dfrac{7}{9}.1-\dfrac{2}{3}\\ =\dfrac{7-2.3}{9}\\ =\dfrac{1}{9}\)

Answer 2

A = 7/9 x 12/19 + 7/9 x 7/19 - 2/3

A = 7/9 x ( 12/19 + 7/19) - 2/3

A = 7/9 x 1 - 2/3

A = 7/9 - 2/3

A = 1/9

Answer 3

\(=\dfrac{7}{9}\left(\dfrac{12}{19}+\dfrac{7}{19}\right)-\dfrac{2}{3}=\dfrac{7}{9}-\dfrac{6}{9}=\dfrac{1}{9}\)