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can you walk me through solving twenty minus negaive x is greater than or equal to 16?
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Yes, I can.
20 - (-x) >= 16. (1)
Distract 20 from both sides. You will get an equivalent inequality
-(-x) >= 16-20, or, which is the same
-(-x) >= -4. (2)
Next, -(-x) = x, for any x. As a result, from (2) you have
x >= -4.
It is the final form. It is your answer.
The set {x | x >= -4} is the solution of the original inequality (1).
You can represent it in other form:
the set [,) is the solution.