Combine Addition
2x+4x
6x
10x-5x
5x
3(x+3)
3x+9
Can you add 5x+4y?
No
What is an unknown value called?
A Variable
4x+8x
12x
6x-2x
4x
2(x+5)
2x+10
Are 2x and 6x like terms?
Yes
What is the small number called that is above the base like in x2?
An Exponent
5x+2+4x
9x+2
7x+5-3x
4x+5
3(2x+4)
6x+12
Like terms or not like terms
3x + 2y + 5xy
Not Like Terms
2x+4+6x+4
8x+8
9x-5-4x-3
5x-8
7(3x+5)
21x+35
Like Terms or Not Like Terms
5y - y + 2y
Yes
3x+7x+2+4x+6
14x+8
10x-5-2x+6-3x
5x+1
-5(4x-3)
-20x+15
Like Terms or Not Like Terms
xy + 3xy - 4xy