One-Step +/- Equations
a + 3 = 8
5
Give me an example of a variable
any letter
5a = 25
5
a/9 = 9
81
A = l x w
The length of your desk if the area is 414 inches squared and the width is 18 inches.
23 inches
x - 85 = 17
102
Define inverse operation
The opposite, signs that undo each other
25n = 625
25
a/7 = 4
28
5/20
5.38 + r = 22.3
16.92
What is the inverse operation of addition?
Subtraction
18g = 486
27
a/21 = 15
315
a + 1/3 = 5/6
7/6
or
1 1/6
a + 30 = 120
90
Name the 4 operations
addition, subtraction, multiplication, division
1.2y = 144
120
a/12 = 47
564
4/5x = 12
15
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
The algebraic equation you would use if you bought a pack of gum for $2.29 and you paid with $20.
For double points, the amount of change you would receive.
20 - g = 2.29
$17.71