Question

знайти значення виразу
15:(3 12/17+2 5/17)+(4 1/5-2 3/5):4​

Answer 1

Ответ:

$15 \div (3 \frac{12}{17} + 2 \frac{5}{17} ) + (4 \frac{1}{5} - 2 \frac{3}{5} ) \div 4 = \\ = 15 \div 6 + 1 \frac{3}{5} \div 4 = \\ = \frac{15}{6} + \frac{8}{20} = \\ = \frac{5}{2} + \frac{2}{5} = \\ = \frac{5 \times 5 + 2 \times 2}{10} = \\ = \frac{29}{10} = 2.9$