Add 3/4 + (-2 1/2) using the number line

3 1/4

Step-by-step explanation:

It's easiest to think of 3/4 + (-2 1/2) as (-2 1/2) + 3/4.

-2 1/2 represents the low end and 3/4 the high end. The sum is found by calculating the distance between them.

The distance from - 2 1/2 to 0 is 2 1/2; that from 0 to 3/4 is 3/4.

So all we need to do now is to add up these two positive numbers:

2 2/4 + 3/4 = 2 5/4, or 3 1/4.

go left of 0 - 2.5 spaces then go right. 75 spaces = - 1.75 or - 1 3/4

Step-by-step explanation:

go left of 0 - 2.5 spaces then go right. 75 spaces = - 1.75 or - 1 3/4