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 one year ago
1. If a and b are any two real numbers, explain how you calculate the difference a – b. Be sure to include the following in your explanation:
a. A description of the relationship between addition and subtraction
b. How you can use a number line to help with the calculation
c. How you can determine the sign of the result
 one year ago
1. If a and b are any two real numbers, explain how you calculate the difference a – b. Be sure to include the following in your explanation: a. A description of the relationship between addition and subtraction b. How you can use a number line to help with the calculation c. How you can determine the sign of the result

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