2. Combining Like Terms in Algebra County

4. Different types of variables are unlike terms. 4x 8x 2 unlike To be like terms, the variable part is what has to be the same, not the numbers.

5. Different types of variables are unlike terms. The variable part is what has to be the same, not the numbers. 2xy- x 2 y unlike 1

6. These are like terms even though they contain both an x and a y. 3xy -9xy LIKE

7. These are also like terms. xy yx LIKE 11 We write variables in alphabetical order.

8. Even if we put numbers in front (coefficients) of each variable, they are still like terms. xyyx LIKE 5 -3

9. Suppose we have: It could also be: This is the commutative property.

10. Or: Commutative property again

11. The Adding Song Sung in Algebra County to the tune of “Hark! The Herald Angels Sing”

12. When in math we do addition We must always add like things. To add decimals, we must line up Corresponding place values. To add fractions, we’re in need of Like denomina-ators, In Algebra, we need like terms; They stay the same after we add, In Algebra, we need like terms; They stay the same after we add.

13. The Multiplying Song Sung in Algebra County to the tune of “Hark! The Herald Angels Sing”

14. When we multiply two terms They don’t have to be alike. First we multiply the numbers, Next, of course, the variables. When we write the final product Here’s the order of the factors: Number first, the letters next, Recorded alphabetically, Number first, the letters next, Recorded alphabetically.

15. Write in notes:

19. to Algebra County