Question

Alguien que me ayude a resolverlas ​

Answer 1

$10 - 4 + 20 \times 4 \div 5 - {3}^{0} \\ 6 + 80 \div 5 - 1 \\ 6 + 16 - 1 \\ 21$

$- \frac{4}{7} + \frac{4}{13} ( \frac{7}{8} - \frac{2}{3} ) \\ - \frac{4}{7} + \frac{4}{13} ( \frac{5}{24} ) \\ - \frac{4}{7} + \frac{5}{78} \\ - \frac{277}{546}$

$\frac{5}{4} ( \frac{5}{2} - ( \frac{1}{2} + \frac{1}{3} )) + \frac{1}{6} \\ \frac{5}{4} ( \frac{5}{2} - \frac{5}{6} ) + \frac{1}{6} \\ \frac{5}{4} ( \frac{5}{3} ) + \frac{1}{6} \\ \frac{25}{12} + \frac{1}{6} \\ \frac{9}{4}$

$(12 \div 3) \times 4 - 2 \times 6 \\ 4 \times 4 - 12 \\ 16 - 12 \\ 4$