To solve the inequality \(5a + 18 < -27\), we follow these steps:
Step 1: Subtract 18 from both sides of the inequality. \[5a + 18 - 18 < -27 - 18\] This simplifies to: \[5a < -45\]
Step 2: Divide both sides by 5. \[\frac{5a}{5} < \frac{-45}{5}\] This simplifies to: \[a < -9\]
Step 3: Write the solution set. The solution set is: \[a < -9\]
So, in order:
- Step 1: Subtract 18 from both sides
- Step 2: Divide both sides by 5
- Step 3: Write the solution set
For the solution set, the answer is: \(a < -9\).