One-Step equations (+)
a + 3 = 8
x=5
a - 5 = 4
a=9
5a = 25
a=5
a/9 = 9
a=81
Give me an example of a variable.
any letter
x + 8 = 12
x=4
a - 10 = 13
a=23
25n = 100
n=4
a/7 = 5
a=35
Define inverse operation
The opposite, signs that undo each other
a + 9.4= 16.6
a=7.2
a - 11.5 = 30
a=41.5
5g = 15
g=3
a/10 = 40
a=400
What is the inverse operation of addition?
Subtraction
x + 1/2 = 3/4
a=1/4
9/5=r-1/5
a = 10/5 = 2
12y = 144
y=12
a/1.5 = 18
a=27
Name the 4 operations.
Addition, Subtraction, Multiplication, and Division
a + 98 = 86
a=-12
a - 19.2 = 55.6
a=74.8
6=1/3z
z=18
b/(1/4)=4/3
b=3
What can you do to check your answer when solving?
Plug your answer in.