Solve for q
q\geq 5
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\frac{-20}{-4}\leq q
Divide both sides by -4. Since -4 is negative, the inequality direction is changed.
5\leq q
Divide -20 by -4 to get 5.
q\geq 5
Swap sides so that all variable terms are on the left hand side. This changes the sign direction.
Examples
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Matrix
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