1
a + 3 = 8
5
-5-a=8
-13
Give me an example of a variable
any letter
5a = 25
5
a/9 = 9
81
x + 8 = 12
4
-10-x=30
-40
Define inverse operation
The opposite, signs that undo each other
25n = 625
25
a/7 = 4
28
a + 66= 21
-45
a - 56 = 8
64
What is the inverse operation of addition?
Subtraction
18g = 486
27
a/-10 = 4
-40
a + 30 = 120
90
3-x=10
-7
Name the 4 operations
addition, subtraction, multiplication, division
12y = -144
-12
a/12 = -4
-48
a + (-12) = 86
86
a - 48= 28
76
What can you do to check your answer when solving?
Plug your answer in/ substitute
-8x = 56
-7
20/x=5
4