Negative 4 minus positive 15 = negative 19
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+4--15 rewritten mathematically. Because there are two negatives in that question, they cancel or divide each other out. You now have 4 plus 15 which equals 19.
Positive 3 plus negative 5 minus negative 2 minus positive 4 is equal to -4.
Negative 15 (-15). Subtracting a positive yields the same result as adding a negative.
Positive 8.... is that right?
it is negative 5
-5 minus 4 is -9.