Question

a) (2/3 + 1/5)²: (2/5 - 1/3)

b) (2va 1/3 - 1va 3/5) * (2va 4/9: 3 va 1/2)²

c) (2/3 + 1/4 - 2/5): (4/5 -3/7)

Answer 1

a) \(\left(\frac{2}{3}+\frac{1}{5}\right)^2:\left(\frac{2}{5}-\frac{1}{3}\right)\)

\(=\left(\frac{13}{15}^2\right)\cdot15\)

\(=\frac{169\cdot15}{225}\)

\(=\frac{169}{15}\)

Answer 2

b) 

\(\left(2\frac{1}{3}-1\frac{3}{5}\right)\cdot\left(2\frac{4}{9}:3\frac{1}{2}\right)^2\)

\(=\left(\frac{7}{3}-\frac{8}{5}\right)\cdot\left(\frac{22}{9}\cdot\frac{7}{2}\right)^2\)

\(=\frac{11\cdot5929}{15\cdot81}\)

\(=53,6781893\)