Addition
a + 3 = 8
5
a - 5 = 4
Give me an example of a variable
any letter
5a = 25
5
a/9 = 9
81
x + 8 = -12
-20
a - 10 = -13
-3
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
150
a - (-15) = 15
0
Name the 4 operations you can use in math.
addition, subtraction, multiplication, division
(3/4)y = -12
-16
a/-12 = -4
48
a + (-12) = 86
98
a - (-48)= 28
What can you do to check your answer when solving?
Substitute the variable with your answer.
(1/8)x = 56
448
b/12 = 7
84