Add and subtract signed numbers and explain the meaning of the sign changes.
Rewrite subtraction as adding the opposite
Problem
Rewrite \(-2~-~6\) as addition of the opposite, and evaluate it.
Big Picture
What this problem is really about
Keep the first number, change subtraction to addition, and replace the number being subtracted with its opposite. That produces two negative addends, so their magnitudes combine and the common negative direction remains. The completed statement should show both the equivalent addition expression and its evaluated value.
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