One-Step equations (+)
a + 3 = 8
5
a - 5 = 4
9
Give me an example of a variable
any letter
5a = 25
5
a/9 = 9
81
First step in solving equations
Draw a T
x + 8 = 12
4
a - 10 = 13
23
opposite of subtraction
addition
25n = 625
25
a/7 = 4
28
Step 2 solving equations
isolate the variable
a + 66= 21
-45
a - 56 = 8
64
opposite of division
multiplication
18g = 486
27
a/10 = 4
40
step 3 solving equations
do the opposite
a + 30 = 120
90
a - 15 = 15
30
Name the 4 operations
addition, subtraction, multiplication, division
12y = 144
12
a/12 = 4
48
step 4 solving equations
a + 12 = 86
74
a - 48= 28
76
What can you do to check your answer when solving?
Plug your answer in
8x = 56
7
b/12 = 7
84
what is the opposite of addition
subtraction