Post on 19-Jan-2016
Example 1 Solve a Two-Step Equation
Example 2 Solve Two-Step Equations
Example 3 Solve Two-Step Equations
Example 4 Equations with Negative Coefficients
Method 1 Use a model.Remove 1-tile from the mat.
Solve
Separate the remaining tiles into 5 equal groups.
There are 5 tiles in each group.
Method 2 Use symbols.Use the Subtraction Property of Equality.
Use the Division Property of Equality.
Write the equation.Subtract 1 from each side.
Simplify.
Divide each side by 5.
Answer: The solution is 5.
Answer: 6
Solve
Method 1 Vertical Method
Write the equation.
Add 8 to each side.
Simplify.
Divide each side by 2.
Simplify.
Check your solution.Solve
Answer: The solution is 21.
Method 2 Horizontal Method
Write the equation.Add 8 to each side.
Simplify.
Divide each side by 2.
Simplify.
The sentence is true.
Write the equation.Check
Replace n with 21.
Answer: 9
Check your solution.Solve
Write the equation.
Subtract 2 from each side.
Simplify.
Multiply each side by 3.
Simplify.
Answer: The solution is –18.
Solve
Answer: –26
Solve
Answer: The solution is –2.
Write the equation.
Subtract 8 from each side.
Simplify.
Divide each side by –3.
Simplify.
Definition of subtraction
Solve
Answer: –3
Solve
Check your solution.
Write the equation.
Combine like terms;
Simplify.
Divide each side by 2.
Add 2 to each side.
Identity Property;
Simplify.
Solve
Answer: The solution is 8.
Write the equation.
Multiply.
The statement is true.
Check
Replace k with 8.
Answer: 5
Solve