### Home > CC3 > Chapter 1 > Lesson 1.2.1 > Problem 1-49

1-49.

Simplify the following expressions.

Think about a number line. If you start at

and then move left , where do you end up?

Find a common denominator.

Think of positive numbers as 'having' and negative numbers as 'owing.' In this case, you have

but owe . Will you end up 'having' or 'owing'? How much?

Find a common denominator.

Change the mixed number to a fraction greater than one.

See (e).

Adding a negative number is the same as subtracting a positive number.

Subtracting a negative number is the same as adding a positive number.

See (c).