Question

выполни действия 5/24+7/60

11/21-3/35

5/42+10/63


19/60-8/45


5/18+9/24-7/12

3/20-2/25+1/30


ПЖ

Answer 1

1)
$frac{5}{24} + frac{7}{60} = frac{25 + 14}{120} = frac{39}{120} = frac{13}{40}$
2)
$frac{11}{21} - frac{3}{35} = frac{55 - 9}{105} = frac{46}{105}$
3)
$frac{5}{42} + frac{10}{63} = frac{15 + 20}{126} = frac{35}{120} = frac{5}{18}$
4)
$frac{19}{60} - frac{8}{45} = frac{57 - 30}{180} = frac{25}{180} = frac{5}{36}$
5)
$frac{5}{18} + frac{9}{24} - frac{7}{12} = frac{5}{18} + frac{3}{8} - frac{7}{12} = frac{20 + 27 - 42}{72} = frac{5}{72}$
6)
$frac{3}{20} - frac{2}{25} + frac{1}{30} = frac{45 - 24 + 10}{300} = frac{31}{300}$