mjmj6061 mjmj6061
  • 08-10-2017
  • Mathematics
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You can use a minus sign to make a negative number like -2. what happens if you put a plus sign before a number? what about 2++2?

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Аноним Аноним
  • 08-10-2017
if its positive and you want to put the positive symbol you do it like so...5+(+5). but the positive symbol is not always required,  if it is subtraction you do this8-(-2) or something like that. 
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-15=-4m+58n+7=31-10=10(k-9)
good job