Question

срочно нужно решить 20 балов дам

Answer 1

$\frac{5x - 9}{a} + \frac{9}{a} = \frac{5x - 9 + 9}{a} = \frac{5x}{a}$

$\frac{15}{m} \div \frac{5}{ {m}^{2} } = \frac{15m {}^{2} }{5m} = 3m$