Question

Найдите значение выражения!

Answer 1

$9b + \frac{5a - {9b}^{2} }{b} = \frac{9b {}^{2} + 5a - {9b}^{2} }{b} = \frac{5a}{b} = \frac{5 \times 9}{36} = \frac{45}{36} = \frac{5}{4} = 1 \frac{1}{4} = 1.25$