Question

решите третье пожалуйста ♡​

Answer 1

$0.75:\dfrac{5}{6} + 2.5\cdot\dfrac{2}{5} - 1:1\dfrac{1}{6} = \dfrac{75}{100}\cdot\dfrac{6}{5} + \dfrac{25}{10}\cdot\dfrac{2}{5} - 1\cdot\dfrac{6}{7} = \dfrac{9}{10} + 1 - \dfrac{6}{7} = \dfrac{63}{70} + 1 - \dfrac{60}{70} = \dfrac{63-60}{70} + 1 = 1\dfrac{3}{70}$