Question

\(\dfrac{5}{25}-\dfrac{-7}{15}\)

Answer 1

=\(\dfrac{1}{5}+\dfrac{7}{15}=\dfrac{3}{15}+\dfrac{7}{15}=\dfrac{10}{15}=\dfrac{2}{3}\)

Answer 2

\(\dfrac{5}{25}-\dfrac{-7}{15}\)

\(\dfrac{5}{25}=\dfrac{5.3}{25.3}=\dfrac{15}{75}\)

\(\dfrac{-7}{15}=\dfrac{-7.5}{15.5}=\dfrac{-35}{75}\)

\(\dfrac{15}{75}-\dfrac{-35}{75}=\dfrac{15-\left(-35\right)}{75}=\dfrac{50}{75}\)

Answer 3

\(\dfrac{5}{25} - \dfrac{-7}{15} = \dfrac{5}{25} + \dfrac{7}{15} \) \(= \dfrac{1}{5} + \dfrac{7}{15} = \dfrac{3}{15} + \dfrac{7}{15} = \) \(\dfrac{10}{15} = \dfrac{2}{3}\)

Answer 4

15+715=315+715=1015=23

Answer 5