When dealing with algebraic expressions, we want to simplify them to their most basic form. Take the following equation:
2x + 2 + (3x + 4)
Like terms can be added and subtracted to simplify the expression above.
5x + 6
Let's try another example:
4x + (2x + 4) + 2y + 7
This expression can be simplified to:
6x + 2y + 11
While it may seem simple and obvious here, the ability to simplify expressions is an important skill for more advanced topics, where expressions become much more complicated.