Addition
a + 2 = 6 What does a =?
a = 4
d - 2 = 6 What does d = ?
d = 8
7x = 21 What does x = ?
What does x = ?
What is the inverse operation of subtraction?
ADDITION
An equation is a math sentence that HAS to have an________ sign.
equal sign!
9 + b = 19 What does b=?
b = 10
t - 10 = 20 What does t = ?
t = 30
2e = 4 What does e = ?
e = 2
What is the inverse operation of multiplication?
Division
A variable is a __________.
letter
y + 36 = 50 What does y = ?
y = 14
50 - L = 20 What does L = ?
L = 30
10x=90, what does x = ?
x= 9
Inverse operations _________ each other.
UNDO
The goal of solving an equation is to find the value of the _______.
variable
x + 4 = 100 What does x =?
x = 96
a - 25 = 25 What does a = ?
a = 50
13c = 39
c = 3
When I have an operation and its inverse I can ______ it out if it is the same number.
CROSS IT OUT
True or False: We want to get the variable alone!
TRUE!
1000 = g + 256 What does g = ?
g = 744
P - 9 = 100, What does P = ?
109
15R = 45
To get the variable alone on one side of the equal sign, I need to get rid of what is attached to the variable. I do this by using the ____________ operation.
INVERSE
Addition, subtraction, multiplication and division are examples of _____________.
operations