## Geometry: Common Core (15th Edition)

$a \lt -1$
Use the distributive property to simplify the left side of the equation: $20a + 12 \lt -8$ Subtract $12$ from each side of the inequality to isolate the constants on one side of the inequality: $20a \lt -20$ Divide each side by $20$ to solve for $a$: $a \lt -1$