Answer:
1.
[tex] \frac{3}{7} + \frac{9}{14} = \frac{2 \times 3 + 9}{14} = \frac{15}{14} = 1 \frac{1}{14} [/tex]
2.
[tex] \frac{1}{6} + \frac{3}{4} = \frac{2 \times 1 + 3 \times 3}{12} = \frac{11}{12} [/tex]
3.
[tex] \frac{4}{6} + \frac{4}{18} = \frac{2 \times 2}{3 \times 2} + \frac{2 \times 2}{9 \times 2} = \frac{3 \times 2 + 2}{9} = \frac{8}{9} [/tex]
4.
[tex] \frac{4}{5} - \frac{6}{15} = \frac{4}{5} - \frac{2 \times 3}{5 \times 3} = \frac{4 - 2}{5} = \frac{2}{5} [/tex]
5.
[tex] \frac{2}{5} - \frac{3}{6} = - \frac{1}{10} [/tex]
6.
[tex] \frac{3}{7} \times \frac{4}{5} = \frac{3 \times 4}{7 \times 5} = \frac{12}{35} [/tex]
7.
[tex] \frac{5}{8} \times - \frac{5}{3} = \frac{5 \times 5}{8 \times 3} = - \frac{25}{24} = - 1 \frac{1}{24} [/tex]
8.
[tex] \frac{3}{4} \div \frac{2}{5} = \frac{3 \times 5}{4 \times 2} = \frac{15}{8} = 1 \frac{7}{8} [/tex]
9.
[tex] \frac{9}{10} \div ( - \frac{4}{5} ) = \frac{9 \times 5}{10 \times 4} = - \frac{45}{40} = - \frac{9 \times 5}{8 \times 5} = - 1 \frac{1}{8} [/tex]
10.
[tex]3 \frac{6}{7} \times 2 \frac{2}{5} = 9 \frac{9}{35} [/tex]
sana makatulong salamat
#skeptron correct me if I'm wrong
