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What expressions express
Using the combined powers of Chuck Norris and polar bears (which are much less powerful than Mr. Norris) to better understand what expressions represent and how we can manipulate them.
Great tutorial if you want to understand that expressions are just a way to express things!
In simple addition we learned to add all the numbers together to get a sum. In algebra, numbers are sometimes attached to variables and we need to make sure that the variables are alike before we add the numbers.
So what if we add not just numbers or variables..but expressions? Here's a simple example to get you thinking about this.
Another good explanation (minus Chuck Norris) on the how we combine like terms in algebra. This will totally make sense.
We're going to simplify this expression together putting to use our new knowledge of how to combine like terms. Ok? Let's do it!
This example of combining like terms in an expression get a little hairy. Listen closely.
Combining like terms with positive and negative numbers
We've learned about order of operations and combining like terms. Let's layer the distributive property on top of this.
Combine like terms with positive and negative numbers using distribution
In this example we are asked to expand an expression using the distributive property. Practice this one with us.
We're looking to find the expressions that are equivalent to a given expression that can be simplified. Give it a try with us.