Solve for w
w\geq 0.9
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-3.7+w\geq -2.8
Swap sides so that all variable terms are on the left hand side. This changes the sign direction.
w\geq -2.8+3.7
Add 3.7 to both sides.
w\geq 0.9
Add -2.8 and 3.7 to get 0.9.
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