SOLUTION: If a and b are any two real numbers, explain how you calculate the difference a- b. Be sure to use the following in the explanation. A) A description of the relationship between

Question 185219: If a and b are any two real numbers, explain how you calculate the difference a- b. Be sure to use the following in the explanation.
A) A description of the relationship between addition and subtraction.
B) How you can use a numberline to help with the calculation.
C) How you can determine the sign of the result.
Answer by CubeyThePenguin(3113) (Show Source): You can put this solution on YOUR website!
1. Plot a and b on the number line.
2. From a, draw b ticks backwards. The resulting value is a - b.
3. To check the sign, see if 0 is to the right or to the left of the result.

0 is to the right ---> a - b is negative
0 is to the left ---> a - b is positive.
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