One-Step +/- Equations
a + 3 = 8
5
Give me an example of a variable
any letter
5a = 25
5
a/9 = 9
81
2x - 4x + 9
-2x + 9 or 9+ -2x
x - 85 = 17
102
Define inverse operation
The opposite, signs that undo each other
25n = 625
25
a/7 = 4
28
-5 + 7x -8
-13 + 7x or 7x + -13
5.38 + r = 22.3
16.92
What is the inverse operation of addition?
Subtraction
18g = 486
27
a/21 = 15
315
2x + 7x -3 -X
8x -3 or -3 + 8x
a + 30 = 120
90
Name the 4 operations
addition, subtraction, multiplication, division
1.2y = 144
120
a/12 = 47
564
-8 + -X -3 + 7x
6x -11 or -11 + 6x
a - 112 = 1888
2000
What can you do to check your answer when solving?
Plug your answer in
.8x = 56
70
b/53 = 402
21,306
-x + -x -3 + 5
-2x + 2 or 2 - 2x