1. Simplify this expression: 13+ (-12) - (-5) = ?
OA. -30
OB.6
O C.30
D.-6
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Answer :

We can use the rule, that positive and negative sign next to each other equals negative.

Negative and negative next to each other equals positive (who knows why).

13 + (-12) - (-5)

Use that rule:

13 - 12 + 5 =

6

The answer if OB.6 hope this helps

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