Question

18a + 7b + 1 при a=5/9 b=1/7​

Answer 1

Ответ:

$18 \times \frac{5}{9} + 7 \times \frac{1}{7} + 1 = \frac{18 \times 5}{9} + \frac{7 \times 1}{7} = \frac{90}{9} + \frac{7}{7} + 1 = 10 + 1 + 1 = 12$