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 = 625
n=25
a/7 = 35
a=245
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
2/3g = 4/9
g=2/3
a/10 = 40
a=400
What is the inverse operation of addition?
Subtraction
x + 1/2 = 8/9
a=7/18
9/5=r-8/5
a=17/5=3 2/5
1.2y = 14.4
a/1.2 = 18
a=21.6
Name the 4 operations.
Addition, Subtraction, Multiplication, and Division
a + 98 = 86
a=-12
a - 19.2 = 55.6
a=74.8
-6/7=4/5z
z=-15/14
b/(2/3)=4/5
b=8/15
What can you do to check your answer when solving?
Plug your answer in.