10.7 retake expressions

Terms that have the same variables such as 5x and -8x.

• like terms

• coefficients

• exponents

• variables

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

Combine like terms
3x + 2x + 3y - 7y

• 5x + 10y
• 5x + 4y
• 5x - 4y
• 5x -10y

What is the variable? 8x + 15

• 8X

• x

• 15

• +

6 x 8

• 84

• 64

• 48

• 36

7 x 7

• 49

• 42

• 64

• 28

3x - 5x

• 2x
• 8x
• -2x
• 15x²

n -10 +9n -3=

• -3
• 9n-3
• n
• 10n -13