Question

3 1/10 - 4/5 =
1/6+ 2/3=
5/6 + 2/3=
3/4 - 4/8 =
2 1/4 + 1 1/2 =


urgen

Answer 1

Explicación paso a paso:

$a) \\ 3 \frac{1}{10} - \frac{4}{5} = \\ \\ ( \frac{10 \times 3 + 1}{10} ) - \frac{4}{5} = \\ \\ \frac{31}{10} - \frac{4}{5} = \frac{31 - 8}{10} = \frac{23}{10} \\ \\ b) \\ \frac{1}{6} + \frac{2}{3} = \frac{1 + 4}{6} = \frac{5}{6} \\ \\ c) \\ \frac{5}{6} + \frac{2}{3} = \frac{5 + 4}{6} = \frac{9}{6} = \frac{3}{2} \\ \\ d) \\ \frac{3}{4} - \frac{4}{8} = \frac{6 - 4}{8} = \frac{2}{8} = \frac{1}{4} \\ \\ e) \\ 2 \frac{1}{4} + 1 \frac{1}{2} = \\ \\ ( \frac{4 \times 2 + 1}{4} ) + ( \frac{2 \times 1 + 1}{2} ) = \\ \\ \frac{9}{4} + \frac{3}{2} = \frac{9 + 6}{4} = \frac{15}{4}$