Question

simplificar
$\frac{5}{4} + \frac{10}{8} + \frac{12}{8}$
$\frac{5}{4} - \frac{10}{8} + \frac{12}{8} - \frac{10}{8} + \frac{12}{8} =$
$\frac{3}{5} \div \frac{10}{5} \div \frac{2}{3} \div \frac{6}{4}$
me pueden ayudar por favor ​

Answer 1

$\frac{3}{5} \div \frac{10}{5} \div \frac{2}{ 3} \div \frac{6}{4} \\ \frac{3}{5} \times \frac{5}{10} \times \frac{3}{2} \times \frac{4}{6} \\ \frac{3 \div 3}{5 \div 5} \times \frac{5 \div 5}{10} \times \frac{3}{2 \div 2} \times \frac{4 \div 2}{6 \div 3} \\ \frac{1}{1} \times \frac{1}{10} \times \frac{3}{1} \times \frac{2}{2} \\ \frac{1}{10} \times \frac{3}{1} \times \frac{2 \div 2}{2 \div 2} \\ \frac{1}{10} \times \frac{3}{1} \times \frac{1}{1} \\ \frac{1}{10} \times \frac{3}{1} = \frac{3}{10}$

$\frac{5}{4} + \frac{10}{8} + \frac{12}{8} = \\ \frac{5}{4} + \frac{10 + 12}{8} \\ \frac{5}{4} + \frac{22 \div 2}{8 \div 2} \\ \frac{5}{4} + \frac{11}{4} = \frac{5 + 11}{4} = \frac{16 \div 4}{4 \div 4} = \frac{4}{1}$

$\frac{5}{4} - \frac{10}{8} + \frac{12}{8} - \frac{10}{8} + \frac{12}{8} = \\ \frac{5}{4} - \frac{10 \div 2}{8 \div 2} + \frac{12}{8} - \frac{10}{8} + \frac{12}{8} \\ \frac{5}{4} - \frac{5}{4} + \frac{12}{8} - \frac{10}{8} + \frac{12}{8} \\ 0 + \frac{12}{8} - \frac{10}{8} + \frac{12}{8} = \frac{12 - 10 + 12}{8} = \frac{14 \div 2}{8 \div 2} = \frac{7}{4}$