Hi there!
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I believe your answer is:
4
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Here’s why:
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[tex]\boxed{\text{Calculating the Answer...}}\\\\15+(-11)\\----------------\\\rightarrow 15 +1(-11)\\\\\rightarrow 15 - 11\\\\\rightarrow \boxed{4}[/tex]
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Hope this helps you. I apologize if it’s incorrect.
