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Can you help me with all this question please

Can you help me with all this question please-example-1
User Ppaulojr
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Instead answering all the questions for you, how about I show you how to do it? Here are rules for adding and subtracting negative numbers:
1. Two like signs become a positive sign
2. Two unlike signs become a negative sign

So all you have to remember is those two rules.
User Ridoy
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