Vocab
What is a Variable
a letter that represents a number we don’t know yet
What is the inverse operation of Addition?
Subtraction
Combine the like terms:
4y + 7y - y + 3y
13y
What does it mean to distribute?
Multiplying a number by each term inside of parentheses
4 x 5
20
What is the biggest difference between an equation and an expression? (Need to be specific)
Expressions DO NOT have an equal sign
Equations Do have an equal sign
What is the inverse operation of multiplication?
Division
Combine the like terms:
4x - 3x + 5 + 6x
7x + 5
Distribute and put into simplest form:
4 (3x + 6)
12x + 24
63 / 7
9
What is a zero pair?
When you add 2 numbers (one positive and one negative) together and they equal zero
What would I need to do to first to solve this equation?
x + 23 = 45
Subtract 23
Solve the equation (remember your answer should be in the "x = " form):
x - 5 = 10
x = 15
Distribute and put into simplest form:
5 (5b – 3)
25b - 15
8 x 9
72
What are like terms?
Parts of a math problem with the same variable (and/or exponent)
What would I need to do first to solve this equation?
x / 6 = 23
Multiply by 6
Solve the equation (remember your answer should be in the "x = " form):
4x = 36
x = 9
Distribute and put into simplest form:
-8 (4w + 5)
-32w - 40
42 / 6
7
What does it mean to simplify an expression or equation?
What would I need to do first to solve this equation?
5x = 135
Divide by 5
Combine the like terms:
8b + 3 – 7b + 1 + 4b - 2
5b + 2
Distribute and put into simplest form:
4 (2x + 7) - 12
8x + 16
12 x 6
72