a -(-b) = a + b for all integers a and b.
Added by Ashley F.
Step 1
The double negative in -(-b) cancels out, so we can rewrite it as a + b. Now, we need to prove that this is true for all integers a and b. Let's start with an example: Let a = 5 and b = 3. Then, a -(-b) = 5 -(-3) = 5 + 3 = 8. And, a + b = 5 + 3 = 8. As Show more…
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