Question

$9 frac{4}{17}-7 frac{3}{15}$

Answer 1

$9 frac{4}{17}-7 frac{3}{15}=9+ frac{4}{17}-7- frac{3}{15}=9-7+ frac{4}{17}- frac{1}{5} =2+ frac{4cdot5}{17cdot5}- frac{17}{5cdot17}= \ 2+ frac{20-17}{85}=2 frac{3}{85}$