Math

Math
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  • help me i cant add or subtract intigers
  • i'll help you
  • ex.1 same signs 2+(8)=10 normal math different sign 2+-9=7 subtraction
  • okay
  • if the signs are the same add like normal but if the negative number is bigger than the positive its negative it also goes the other way around.
  • the rule of adding integers is if the signs are different subtracted
  • additive inverse example 1: 2-(-9) change the sign to a + and also change the -9 to a positive 9 because of additive inverse.
  • lets move on to subtractions
  • the rule is additive inverse This is also known as the opposite number, sign change, and negation of a subtracting integer problem
  • ex.1 2-(5)
  • make the subtraction sign into a addition and change 5 into negative -5
  • now lets solve a problem together what do you do first
  • yes good job
  • if the signs are the same add if there different subtracted 2-(5) subtract so what do you get?
  • 3 because you subtract
  • correct
  • i got an A on my test thank you so much.
  • No problem!!!
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