Question

ayuda por favor es para mañana
doy 100 puntos​

Answer 1

Explicación paso a paso:

1.

$\frac{3}{9} + \frac{5}{9} = \frac{3 + 5}{9} = \frac{8}{9}$

$\frac{6}{8} \times \frac{3}{4} = \frac{6 \times 3}{8 \times 4} = \frac{18}{32} = \frac{9}{16}$

2.

$\frac{5}{6} + \frac{1}{3} = \frac{(5 \times 3) + (1 \times 6)}{18} = \frac{15 + 6}{18} = \frac{21}{18} = \frac{7}{6}$

$\frac{5}{7} \div \frac{5}{3} = \frac{ \frac{5}{7} }{ \frac{5}{3} } = \frac{5 \times 3}{7 \times 5} = \frac{15}{35} = \frac{3}{7}$

3.

$\frac{7}{9} \div \frac{2}{6} = \frac{ \frac{7}{9} }{ \frac{2}{6} } = \frac{7 \times 6}{9 \times 2} = \frac{42}{18} = \frac{21}{9} = \frac{7}{3}$

$\frac{5}{3} + \frac{2}{3} = \frac{5 + 2}{3} = \frac{7}{3}</p><p>$

4.

$\frac{2}{3} + \frac{3}{5} = \frac{(2 \times5 ) + (3 \times 3)}{15} = \frac{10 + 9}{15} = \frac{19}{15}$

$\frac{4}{8} - \frac{2}{6} = \frac{(4 \times 6) - (2 \times 8)}{48} = \frac{24 - 16}{48} = \frac{8}{48} = \frac{4}{24} = \frac{2}{12} = \frac{1}{6}$

5.

$\frac{6}{7} \times \frac{1}{3} = \frac{6 \times 1}{7 \times 3} = \frac{6}{21} = \frac{2}{7}$

$\frac{3}{9} \times \frac{1}{3} = \frac{3 \times 1}{9 \times 3} = \frac{3}{27} = \frac{1}{9}$

6.

$\frac{3}{9} + \frac{2}{5} = \frac{(3 \times 5) + (2 \times 9)}{45} = \frac{15 + 18}{45} = \frac{33}{45} = \frac{11}{15}$

$\frac{16}{20} - \frac{10}{20} = \frac{16 - 10}{20} = \frac{6}{20} = \frac{3}{10}$

7.

$\frac{3}{8} + \frac{2}{3} = \frac{(3 \times 3) + (2 \times 8)}{24} = \frac{9 + 16}{24} = \frac{25}{24}$

$\frac{3}{6} - \frac{4}{9} = \frac{(3 \times 9) - (4 \times 6) }{54} = \frac{27 - 24}{54} = \frac{3}{54} = \frac{1}{18}$

8.

$\frac{9}{10} \times \frac{3}{6} = \frac{27}{60} = \frac{9}{20}$

$\frac{6}{8} \div \frac{1}{4} = \frac{ \frac{6}{8} }{ \frac{1}{4} } = \frac{6 \times 4}{8 \times 1} = \frac{24}{8} = \frac{12}{4} = \frac{6}{2} = \frac{3}{1}$

9.

$\frac{4}{7} + \frac{2}{7} = \frac{4 + 2}{7} = \frac{6}{7}$

$\frac{2}{6} + \frac{3}{8} = \frac{(2 \times 8) + (3 \times 6)}{48} = \frac{16 + 18}{48} = \frac{34}{48} = \frac{17}{24}$