Solve inequalities and find solution sets

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Learn it Solve an inequality like an equation, but if you multiply or divide by a negative number, flip the sign. If x must be an integer, list the integers in the range.

Example: Solve $-3x + 4 > 19$.

Subtract 4: $-3x > 15$.
Divide by −3 and flip the sign: $x < -5$.
If x is an integer, the solutions are −6, −7, −8, …

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