Theo bài ra ta có:
\(\frac{a}{b}\) = \(\frac{a+8}{b+10}\)
=> a (b +10) = b (a + 8)
=> ab + 10a = ab + 8b
=> ab - ab + 10a - 8b = 0
=> 0 + 10a - 8b = 0
=> 10a = 8b
=> \(\frac{a}{b}\) = \(\frac{8}{10}\) = \(\frac{4}{5}\)
Vậy \(\frac{a}{b}\) = \(\frac{4}{5}\).