Vocabulary
The " opposite " of something else
Inverse
5y = 25
y = 5
4r + 3 = 19
r = 4
3(m + 1) = 6
m = 2
True or False?
In a two step equation you should undo multiplication and division first
False
Name a pair of inverse operations
Multiplication and Division or
Addition and Subtraction
z + 40 = 88
z = 48
8z - 10 = 86
z = 12
12(2g + 4) = 96
g = 2
What is the first step in this equation?
4r + 50 = 440
subtract 50
What Property is shown below?
9(2m - 10 ) = 300
18m - 90 = 300
Distributive Property
d - 35 = -80
z = -45
-2y + 6 = 40
y = -17
9( -3n - 5) = 36
n = -3
What is the first step in this equation?
6z - 99 = 450
Add 99
To be equal or equivalent
-5m = -45
m = 9
m/5 - 25 = 75
m = 500
-5(2b - 3) = 65
b = -5
What will be the SECOND step in this equation?
7c + 55 = 308
Divide by 7
Finish this statement:
The goal of any equation is to _____________ the variable.
Isolate or get by itself
z/12 = -10
z = -120
-12r - 10 = -154
r = 12
-10(-4z -10) = 260
z = 4
What will the second step in this equation be?
z/45 + 67 = 220
Multiply by 45