Solve the following equation
500-20w>=100
Solve for w
500 - 20w ≥ 100
Group our constants 500 and 100. subtract 500 from both sides
-20w + 500 - 500 ≥ 100 - 500
-20w ≥ -400
Since -20 < 0, reverse our sign from >= to <=
w ≤ 20
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