One Step Equations
X + 7 = 10
X = 3
13X + 5X + 2X
20X
7k - 17 = 60
k = 11
2( x - 4) = 10
x = 9
A letter or symbol used to represent a number.
A variable.
X - 8 = -1
X = 7
2 + 10X - 2X + 5
8X + 7
18 = 5n + 3
n = 3
3( 2x + 4) = 24
x = 2
To undo the operation on one side of the equation
performing inverse operations
-34X = -102
X = 3
1.6X - 1.2X + 3.5 + 4.7X
5.1X + 3.5
1/5X - 2 = 4
x = 30
-4( -6x + 3 ) = 12
x = 1
What is a flipped fraction called?
Reciprocal
12X = -144
X = -12
-1.2r + 3.9 - s + .5s + 7 + .3r
-.5s - .9r + 10.9
b/-9 + 6 = 14
b = -72
4 + 2( x - 8 ) = 44
x = 28
List all operations and their inverse.
multiplication - division
division - multiplication
addition - subtraction
subtraction- addition
10X = 2
X = 1/5
1/2b - 9 + 8b - 7 - b + 14
7.5b - 2
82 + 0.6d = 85
d = 5
-2.5( 3x - 4 ) = 32.5
x = -3
what term means to get it by itself.
To isolate the variable