Question

5/9 + 1/9 =

2/7 + 3/7 =

3/15 + 3/15 =

7/9 - 2/9 =

5/12 - 2/12 =

8/14 - 5/14 =
(fração)
eu n sei direito essa matéria, essa aula online n to entendendo nd​

Answer 1

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

$\frac{2}{7} + \frac{3}{7} = \frac{2 + 3}{7} = \frac{5}{7}$

$\frac{3}{15} + \frac{3}{15} = \frac{3 + 3}{15} = \frac{6}{15} = \frac{2}{5}$

$\frac{7}{9} - \frac{2}{9} = \frac{7 - 2}{9} = \frac{5}{9}$

$\frac{5}{12} - \frac{2}{12} = \frac{5 - 2}{12} = \frac{3}{12} = \frac{1}{4}$

$\frac{8}{14} - \frac{5}{14} = \frac{112 - 85}{238} = \frac{27}{238}$