Решите неравенство (х-6)(4х+7)/9-х≤0

Question

Решите неравенство
(х-6)(4х+7)/9-х≤0

Answer 1

9 \\ \\ - \frac{7}{4} \leq x \leq 6" alt=" \frac{(x-6)(4x+7)}{9-x} \leq 0 \\ \\ \frac{(x-6)(x+\frac{7}{4} )}{9-x} \leq 0 \\ \\ x>9 \\ \\ - \frac{7}{4} \leq x \leq 6" align="absmiddle" class="latex-formula">