Solve for w
w\leq 0
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3w\leq -3+3
Add 3 to both sides.
3w\leq 0
Add -3 and 3 to get 0.
w\leq 0
Product of two numbers is ≤0 if one is ≥0 and the other is ≤0. Since 3\geq 0, w must be ≤0.
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