Question

Спростіть вираз
4,5n - 2n - 1 2/9n + 12,4

Answer 1

$4.5n - 2n - 1 \frac{2}{9} n + 12.4 = \\ = 2.5n - 1 \frac{2}{9}n + 12.4 = \\ = \frac{22.5n - 11n}{9} + 12.4 = \\ = \frac{11.5n}{9} + 12.4$