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The inequality is .
According to addition property of inequality: Add 5 to each side.
(Apply additive inverse property: )
(Apply additive identity property: )
(Add: ) Graph the solution set on a number line.
Note: A dot means that this point is included in the solution set.
Check:
To check, substitute 12, a number greater than or equal to 12 in .
(Substitute )
(Sustract: )
The inequality is true.
The inequality solution is .
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