EQ: How do I Combine Like Terms? Standard EE.1: Apply properties of operations as strategies to add, subtract, factor, and expand linear expressions with rational coefficients.

Vocabulary Constant A number on its own. Examples: 1, 2, 47, 925

Variable Vocabulary A letter that represents an unknown number. Examples: a, b, x, y

Coefficient Vocabulary The number in front of the variable. Examples: 3x 3 is the coefficient -2x -2 is the coefficient

Exponent Vocabulary The number “on top” of the variable. Example: x³ 3 is the exponent

Simplify Vocabulary Rewrite an expression as simply as possible. Reducing to lowest terms.

5 + 3 8

5 cats + 3 cats 8 cats

5 boxes + 3 boxes 8 boxes

5 pillows + 3 pillows 8 pillows

5a + 3a 8a

5b + 3b 8b

5c + 3c 8c

5 cats + 3 dogs 5 cats + 3 dogs

5 apples + 3 oranges 5 apples + 3 oranges

5 + 3 8

5 + 3 8

5 + 3 8

12r – 8 – 12 12r –8 –12

12r –8 –12 12r – 20

1) 3r – r 2) 7 -2e +14 3) -3t + 5 -6t 4) 15 – 3 + 2y -3y

1) 3r – r 2r 2) 7 -2e +14 3) -3t + 5 -6t 4) 15 – 3 + 2y -3y

1) 3r – r 2r 2) 7 -2e +14 -2e+21 3) -3t + 5 -6t 4) 15 – 3 + 2y -3y

1) 3r – r 2r 2) 7 -2e +14 -2e+21 3) -3t + 5 -6t -9t + 5 4) 15 – 3 + 2y -3y

1) 3r – r 2r 2) 7 -2e +14 -2e+21 3) -3t + 5 -6t -9t + 5 4) 15 – 3 + 2y -3y -y + 12