Question

porfa ayuda con esto ​

Answer 1

$b)3 \frac{1}{2} + \frac{1}{5} + \frac{ - 3}{4} = \\ \frac{7}{2} + \frac{1}{5} - \frac{3}{4} = \\ \frac{70}{20} + \frac{4}{20} - \frac{15}{20} = \\ \frac{70 + 4 - 15}{20} = \\ \frac{59}{20}$

$c) \frac{ - 1}{4} + \frac{3}{4} = \frac{ - 1 + 3}{4} = \frac{2}{4} = \frac{1}{2}$

$d) \frac{2}{3} + ( \frac{ - 1}{8} + \frac{3}{4} ) = \\ \frac{2}{3} + ( \frac{ - 1}{8} + \frac{6}{8} ) = \\ \frac{2}{3} + ( \frac{ - 1 + 6}{8} ) = \\ \frac{2}{3} + \frac{5}{8} = \\ \frac{16}{24} + \frac{15}{24} = \\ \frac{31}{24}$

$e) \frac{ - 8}{5} + \frac{7}{15} = \frac{ - 24}{15} + \frac{7}{15} = \frac{ - 24 + 7}{15} = - \frac{17}{15}$