Question

Вычислите: 1)2/5+3/5 2)3/7-2/7 3)7/20-3/20 4)1/9+5/1 5)6/23-2/23 6)3/20+7/20 7)13/29-2/29 8)11/51+13/51 9)17/72-13/72 10)32/55-23/55 11)5/33+6/33 12)13/48-11/47 Ответ в фото Срочно пжж ​

Answer 1

Ответ:

$1) \frac{2}{5} + \frac{3}{5} = \frac{5}{5}$

$2) \frac{3}{7} - \frac{2}{7} = \frac{1}{7}$

$3) \frac{7}{20} - \frac{3}{20} = \frac{4}{20}$

$4) \frac{1}{9} + \frac{5}{9} = \frac{6}{9}$

$5) \frac{6}{23} - \frac{2}{23} = \frac{4}{23}$

$6) \frac{3}{20} + \frac{7}{20} = \frac{10}{20}$

$7) \frac{13}{29} - \frac{2}{29} = \frac{11}{29}$

$8) \frac{11}{51 } + \frac{13}{51} = \frac{24}{51}$

$9) \frac{17}{72} - \frac{13}{72} = \frac{4}{72}$

$10) \frac{32}{55} - \frac{23}{55} = \frac{9}{55}$

$11) \frac{5}{33 } + \frac{6}{33} = \frac{11}{33}$

$12) \frac{13}{48} - \frac{11}{48} = \frac{2}{48}$