Question

Найдите значение выражения
18*(1-9*1/9)-20*1/9

Answer 1

$18 \times (1 - 9 \times \frac{1}{9} ) - 20 \times \frac{1}{9} = \\ 18 \times (1 - 1) - \frac{20}{9 } = \\ = 0 - 2 \frac{2}{9} = - 2 \frac{2}{9}$