Answer:

Explanation:
-
Subtracting a negative number is the same as adding a positive
+
Rewrite each fraction with a common denominator. Let's use 12 as our new denominator.
=
multiple the top and the bottom of the first fraction by 3 to get the equivalent fraction

=
Multiple the top and bottom of the first fraction by 4 to get the equivalent fraction
.
Now, add the two fractions
+
=
The denominator stays the same and you add the numerators.