Question

помогите ппжжжжжж стр 172 номер 503
даю 50 балов
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Answer 1

1) 5\9 + 13/27 = 15/27 + 13/27 = 28/27 = 1 1/27

2) 3/8 + 5/24 = 9/24 + 5/24 = 14/24 = 7/12

3) 5/12 - 13/72 = 30/72 - 13/72 = 17/72

4) 3/5 - 1/7 = 21/35 - 5/35 = 16/35

5) 5/12 + 1/60 = 25/60 + 1/60 = 26\60 = 13/30

6) 9/17 - 19/68 = 36/68 - 19/68 = 17/68 = 1/4

7) 9/10 + 4/15 = 27/30 + 8/30 = 35/30 = 1 1/6

8) 4/15 - 11/60 = 16/60 - 11/60 = 5/60 = 1/12

Answer 2

Пошаговое объяснение:

1.

$\frac{5}{9} + \frac{13}{27} = \frac{15 + 13}{27} = \frac{28}{27} = 1 \frac{1}{27}$

2.

$\frac{3}{8} + \frac{5}{24} = \frac{9 + 5}{24} = \frac{14}{24} = \frac{7}{12}$

3.

$\frac{5}{12} - \frac{13}{72} = \frac{30 - 13}{72} = \frac{17}{72}$

4.

$\frac{3}{5} - \frac{1}{7} = \frac{21 - 5}{35} = \frac{16}{35}$

5.

$\frac{5}{12} + \frac{1}{60} = \frac{25 + 1}{60} = \frac{26}{60} = \frac{13}{30}$

6.

$\frac{9}{17} - \frac{19}{68} = \frac{36 - 19}{68} = \frac{17}{68}$

7.

$\frac{9}{10} + \frac{4}{15} = \frac{27 + 8}{30} = \frac{35}{30} = \frac{7}{6}$

8.

$\frac{4}{15} - \frac{11}{60} = \frac{16 - 11}{60} = \frac{5}{60} = \frac{1}{12}$