Solving Two-Step Equations

1
Solving Two-Step Equations

• Standard MCC8EE7ab
• Objective Solve equations using two steps

2
Objective - To solve equations involving two
steps.
3x 4 16
Hard way
Easy way
3x 4 16
3x 4 16
- Undo Multiplication or Division first
- Undo Addition or Subtraction first
3
Hard way
Easy way
- Undo Mult./ Div. first
- Undo Add./ Subt. first
3x 4 16
3x 4 16
-4 -4
3
3
3x 12
3x
4
16


3
3
3
3
3
4
16
x 4
x


3
3
4
4
-
-
3
3
12
x

3
x
4

4
Rules for Transforming Equations
1) Goal
Isolate the variable on one side of the
equation. ISOLATE
2) Always perform the same operation to both
sides of an equation. BALANCE
3) To undo an operation, perform its opposite
operation to both sides of the equation. INVERSE
OPERATION
5
Solve the following equations.
6
Solve the following equations.