Answer :

When you subtract a negative you're just adding the number. So:
(-5) - (-7) = -5 + 7 = 2
2 + 9 + (-14)
11 + (-14)
When you add a negative number you simply subtract that number. So:
11 + (-14) = 11 - 14 = -3
So this entire equation simplifies to -3

Hope this helps.
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