solve the inequality for u.

-9-6u≥21
simplify your answer as much as possible

1 answer

To solve the inequality \(-9 - 6u \geq 21\), we can follow these steps:

  1. Add 9 to both sides:

    \[ -6u \geq 21 + 9 \] \[ -6u \geq 30 \]

  2. Divide both sides by -6. Remember that when you divide or multiply an inequality by a negative number, you must flip the inequality sign:

    \[ u \leq \frac{30}{-6} \] \[ u \leq -5 \]

The simplified answer is: \[ u \leq -5 \]