Question

решите пожалуйста!
1) 12/27+14/21
2) 14/24-15/40

Answer 1

1)  $frac{12}{27}+ frac{14}{21}= frac{4}{9}+ frac{2}{3}= frac{4}{9}+frac{6}{9}= frac{10}{9}= 1frac{1}{9}$
2) $frac{14}{24}- frac{15}{40}= frac{7}{12}- frac{3}{8}= frac{14}{24}- frac{9}{24}= frac{5}{24}$