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  • -10 - 9= -19
  • Take this equation and find the answer using these rules. The rule is called keep, change, change. It equals -19.
  • -10-(-9)= -1 9-10=-1
  • This first example is a negative minus a negative and the second is a positive minus a positive. This also uses the same reasoning.
  • You took my spotlight so I'm going to take yours.
  • This is a multiplication rap, so put on your learning cap. Multiplying positive by negative equals a negative sum, listen to my raps or you'll feel really dumb.
  • Multiplying a positive by a positive as you know, makes positive, but a negative by a negative does too though!
  • When multiplying negative by positive, you just multiply regularly. Since the rule is negative times positive always equal positive, the answer is -25.
  • -5 x 5=-25
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