Combining Like Terms
We can simplify expressions by adding or subtracting like terms.
3a + 6a = 9a
10p – 2p = 8p
An easy way to think about it is. If I had 3 apples and I’m adding another 6 apples to it, I would have 9 apples in total.
If I had 10 pears and subtracted 2 pears, I would have 8 pears remaining.
We can not simplify expressions by adding or subtracting unlike terms.
3a – 8p
If I had 3 apples, I can’t take away 8 pears from it.
Simplifying Expressions Videos