3/4 + -2/3.

First, find the common denominators.

3/4 = 9/12
2/4 = 8/12
9/12 - 8/12 = ?

- 1/12?

yes

9/12-8/12= 1/12

To find the sum of 3/4 and -2/3, you need to have a common denominator.

Step 1: Find the least common multiple (LCM) of 4 and 3, which is 12.

Step 2: Convert the fractions to have the common denominator 12.

3/4 becomes (3/4) * (3/3) = 9/12.

-2/3 becomes (-2/3) * (4/4) = -8/12.

Now, both fractions have a common denominator of 12.

Step 3: Add the fractions together.

9/12 + (-8/12) = 1/12.

Therefore, 3/4 + -2/3 = 1/12.