Subtracting a negative integer is the same as adding a positive integer. Adding a positive integer to any number always makes the answer larger than the original number. Therefore, if you subtract one negative integer from another your answer will be always be *greater* than the integer you started with.
The number of units between Brian's house and Sue's house.
Both Brian and Sue live on the "street" x=-7, so the distance between their houses is the distance between -2 on that street and +9 on that street. We always consider distance to be positive, so it doesn't matter whether we start at Brian's house and go -11 units to Sue's house, or start at Sue's house and go +11 units to Brian's house. Either way, we travel 11 units.
"Displacement" is another matter. That has a sign associated with it and there is always a reference direction that is positive. Movement in the opposite direction results in a negative displacement. "Distance" is always positive.
First, we’ll define our variable. S - yearly salary Second, we’ll write our equation. Because there are 12 months in a year, our equation (dividing yearly salary by the number of months in a year) will be: S/12 (yearly salary divided by 12, the number of months in a year.) Therefore, if you are earning 5,460 in a year, your average monthly salary is 5,460/12, which is equal to 455 The average yearly salary is 455.