Question

ПОМОГИТЕ УМОЛЯЮ!!!ВСЕ ПРИМЕРЫ.​

Answer 1

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)

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

Answer 2

1.

$\frac{5}{9} +\frac{13}{27} =\frac{5*3}{27} +\frac{13}{27} =\frac{31}{27} =1\frac{4}{27}$

2.

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

3.

$\frac{5}{12} -\frac{13}{72} =\frac{5*6}{72} -\frac{13}{72} =\frac{17}{72}$

4.

$\frac{3}{5} -\frac{4}{7} =\frac{3*7}{35} -\frac{1*5}{35} =\frac{16}{35}$