Let’s simplify those expressions step by step!

For the first expression :
Combine like terms:
.

For the second expression :
Again combine like terms:
.

For the third expression :
Combine like terms:
.

So, the simplified results are:

Here’s some additional information for you:

Math has been around for thousands of years, with ancient civilizations using algebraic concepts as early as 2000 BCE in Babylon. These early mathematicians laid the groundwork for our modern understanding of algebra, helping to transform simple arithmetic into complex equations we tackle today!

In the real world, algebra is everywhere! From budgeting finances to predicting project outcomes or even determining cooking quantities, the equations we solve help us make informed decisions. So the next time you’re figuring out how much pizza to order for a party, know that you’re tapping into a skillful application of algebra!