Answer:
11rt - 7rw - 6tw
Explanation:
(5rt - 3rw - 8t2) + (6rt - 4rw + 2tw)
==> remove parenthesis
5rt - 3rw - 8t2 + 6rt - 4rw + 2tw
==> combine like terms
11rt - 7rw - 6tw
There is no further simplification so this is our final answer.
(note that like terms are terms with similar variables(which are usually indicated by a letter) and degrees
An example is 3x and 4x , they both have a variable of x and a degree of 1