Question

Решите дробь
1/15+1/18+1/12

Answer 1

216+180+270/3240=666/3240

Answer 2

$frac{1}{15}+frac{1}{18}+frac{1}{12}$
$1) frac{1}{15}*18+frac{1}{18}*15=frac{18}{270}+frac{15}{270}=frac{33}{270}$
$2) frac{33}{270}*12+frac{1}{12}*270=frac{396}{3240}+frac{270}{3240}= frac{666}{3240}$