A
a + 3 = 8
5
a - 5 = 4
9
Give me an example of a variable
any letter
5a = 25
5
a/9 = 9
81
x + 8 = 12
4
a - 10 = 13
23
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
a - 15 = 15
30
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
-8x = 56
-7
b/-12 = -7
84