Vocab
What is a Variable
a letter that represents a number we don’t know yet
Combine the like terms:
4x - 3x + 5 + 6x
7x + 5
Solve the equation (remember your answer should be in the "x = " form):
4x = 36
x = 9
What is the 2nd step to solving an equation?
Undo the addition or subtraction
6 x 6
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
Combine the like terms:
4y + 7y - y + 3y
13y
Solve the equation (remember your answer should be in the "x = " form):
x - 5 = 10
x = 15
What is the 1st step in solving an equation?
Complete any distribution and/or combine any like terms.
72 / 8
9
What is a zero pair?
When you add 2 numbers (one positive and one negative) together and they equal zero
Combine the Like Terms:
5x + 4y - 3x + 8x
10x + 4y
Solve the equation (remember your answer should be in the "x = " form):
x/8 = 9
x = 72
Solve the equation (remember your answer should be in the "x = " form):
4x+7=31
x = 6
48 / 6
8
What does it mean to distribute?
Multiplying a number by each term inside of parentheses
Combine the like terms:
8b + 3 – 7b + 1 + 4b - 2
5b + 2
Solve the equation (remember your answer should be in the "x = " form):
12x = 132
x = 11
Solve the equation (remember your answer should be in the "x = " form):
3(2x−3)=33
x = 7
12 x 7
84
What are like terms?
Parts of a math problem with the same variable (and/or exponent)
3 + 5x - 6y + 4x + 12 + 7y
15 + 9x + y
Solve the equation (remember your answer should be in the "x = " form):
x/12 = 12
x = 144
Solve the equation (remember your answer should be in the "x = " form):
3(x+5)=36
x = 7
132 / 12
11