Question

Помогите пожалуйста.​

Answer 1

Общий знаменатель:

${c}^{2} (a + c)$

Приведём дроби

$\frac{8a}{ {c}^{2} } = \frac{8a(a + c)}{ {c}^{2}(a + c) } = \frac{8 {a}^{2} + 8ac}{ {c}^{2}(a + c) }$

$\frac{5a - c}{a + c} = \frac{ {c}^{2}(5a - c) }{ {c}^{2} (a + c)} = \frac{5a {c}^{2} - {c}^{3} }{ {c}^{2} (a + c)}$

$\frac{9}{c} = \frac{9c(a + c)}{ {c}^{2}(a + c) } = \frac{9ac + 9 {c}^{2} }{ {c}^{2} (a + c)}$

Верные ответы: 1