One-Step equations (+)
a + 3 = 8
5
a - 5 = 4
9
Give me an example of a variable
any letter
5a = 25
5
a/9 = 9
81
Find the unit price. The cost of 6 cans of soda is $12. What is the cost per can?
$2
x + 8 = 12
4
a - 10 = 13
23
inverse of subtraction
addition
25n = -625
-25
4 = a/7
28
What is the absolute value of -12?
12
a + 66= 21
-45
a - 56 = -8
48
inverse of division
multiplication
-18g = 486
-27
4 = x/-5
-20
What is the absolute value of 56?
56
a + 30 = -120
-150
a - 15 = -25
-10
Name the 4 operations
addition, subtraction, multiplication, division
-12y = -144
12
a/12 = 4
48
Evaluate.
(5-3)2 + -2 x 4
-4
a + 12 = -86
-98
a - 48= -100
-52
When solving an equation, what is the goal?
Isolate the variable.
-56 = 8x
-7
b/12 = 7
84
Evaluate when y = -2.
3y + 4y + 8
-6