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-15. The rule is 'subtracting a positive is the same as adding a negative'
multiplying and dividing- positive * positive= positive positive * negative=negative negative *negative=positive subtracting- -3-6=? 1. freeze first number- -3 2.reverse the sign to a addition- -3+ 3.Reverse the sign of the number- -3+-6= -9 adding- keep the sign of the larger number, then add/subtract
-18. Subtracting a positive number has the same effect as adding a negative.
If you have negative 8 and subtract 3, you keep going backwards...so you get negative 11. or if you have negative 3 apples, and take away 3, then you have negative 6 apples. Subtraction of a negative number from another negative number can be positive For example: If you have negative three and subtract negative eight you get positive five. -3 - (-8) = 5
It doesn't always. 3 - (-3) = 6