Question

5x – 3y – 8 – 12y – 4x – 3

Answer 1

Combine like terms. That means add or subtract together terms that have x in them. Add or subtract togehter terms that have y in them and then combine together terms that have neither x nor y, and are simply numbers.
5x - 3y - 8 - 12y - 4x - 3
Combine terms with x:
x - 3y - 8 - 12y - 3
Now can you combine together the terms with y?