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
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