Question

cuanto es
1/2-3/12
2 1/3+3 1/2
7 5/8-4 2/8
3+4/5
1+1/3+3/4

Answer 1

Explicación paso a paso:

$\frac{1}{2} - \frac{3}{12} = \frac{6 - 3}{12} = \frac{3}{12} \\ simplificamos \: y \: queda \: \frac{1}{4}$

$2 \frac{1}{3} + 3 \frac{1}{2} = \\ \\ \frac{3 \times 2 + 1}{3} + \frac{2 \times 3 + 1}{2} = \\ \\ \frac{7}{3} + \frac{7}{2} = \frac{14 + 21}{6} = \frac{35}{6}$

$7 \frac{5}{8} - 4 \frac{2}{8} = \\ \\ \frac{8 \times 7 + 5}{8} - \frac{8 \times 4 + 2}{8} = \\ \\ \frac{61}{8} - \frac{34}{8} = \frac{27}{8}$

$3 + \frac{4}{5} = \frac{15 + 4}{5} = \frac{19}{5}$

$1 + \frac{1}{3} + \frac{3}{4} = \frac{12 + 4 + 9}{12} = \frac{25}{12}$