Question

решение примера 3/4 - 4/5 

Answer 1

$frac{3}{4} - frac{4}{5}= frac{15}{20} - frac{16}{20}= - frac{1}{20}$

Answer 2

$frac{3}{4} - frac{4}{5} = frac{15 - 16}{20} = - frac{1}{20}$