1. Вычислите: a) 5+7 16 16 = 5+7 16 = 16 ; 12 1 б) 18+ 13 13 = + ====1; 47 29 47-29 в) 11-11 = ==; г) 5318 61 61 =

1. Вычислите:

а) $$ \frac{5}{16} + \frac{7}{16} = \frac{5 + 7}{16} = \frac{12}{16} = \frac{3}{4}; $$

б) $$ \frac{12}{13} + \frac{1}{13} = \frac{12 + 1}{13} = \frac{13}{13} = 1; $$

в) $$ \frac{47}{11} - \frac{29}{11} = \frac{47 - 29}{11} = \frac{18}{11} = 1 \frac{7}{11}; $$

г) $$ \frac{53}{61} - \frac{18}{61} = \frac{53 - 18}{61} = \frac{35}{61}. $$

Ответ:

а) $$\frac{3}{4};$$

б) $$1;$$

в) $$1 \frac{7}{11};$$

г) $$\frac{35}{61}.$$