1. Cell phone use is prohibited.
Students:
Today is a red light day.
Cell phone use is prohibited.
This is your warning.

2. 1.01
Solving
One and Two
Step Equations

3. An equation is a statement that shows two expressions are equal.
The solution to an equation is the value of the variable that makes the equation true.
To find the solution, the variable must be isolated on one side of the equal sign.
To isolate the variable on one side, remove any numbers and operations from that side by doing the opposite operation with that number to both sides.

4. Solve: Solve: x + 5 = 14 x – 3 = 9 – 5 – 5 + 3 + 3 ____________
– – 5
____________
____________
x = 9
x = 12

5. Solve:
Solve:
8x = 56
___ ___
x = 7
(3) (3)
x = 24

6. When solving a two-step equation, there are two numbers that have to be removed from the same side as the variable.
To solve a two-step equation, undo the addition or subtraction first, then undo the multiplication or division.
Solve:
Solve:
– 1 = 6
2x = 14
– – 6
____________
____________
2x = 8
___ ___
( 3 ) ( 3 )
= 7
x =
x = 21

7. Solve: Solve: 2x + 3 = 13 7x – 5 = 9 + 5 + 5 ___________ ____________
– – 3
___________
____________
2x = 10
7x = 14
___ ___
___ ___
x = 5
x = 2