Simplify the following expressions: 10. a - 2/3 * a

Решение:

1. \[ a - \frac{2}{3} a = 1a - \frac{2}{3} a = \left( 1 - \frac{2}{3} \right) a = \left( \frac{3}{3} - \frac{2}{3} \right) a = \frac{3-2}{3} a = \frac{1}{3} a \]

Ответ: \(\frac{1}{3}a\)