The inequality is .
(Distributive property:
)
(Multiply:
)
(Add:
)
Apply addition property of inequality: Add 12 to each side.
\ \ \
(Add:
)
(Additive inverse property:
)
(Additive identity property:
)
(Divide each side by 3) \ \
(Divide:
)
(Cancel common terms) \ \
Graph the Solution set on a number line
\(Note: A dot means that this point is included in the solution set)
The solution set is .