1. Topic: Solving Two Step Equations
Objective
Students are able to discuss what operations are required in order to solve a two step equation before attempting to solve it.
Students solve two step linear equations by applying inverse operations to isolate the variable.
Standard
8.EE.7 Solve linear Equations in one variable

2. Fill In the Blanks
An ___________ operation undoes a previous operation.
inverse

3. What is happening to the variable?
Expression
Words
Inverse (Words)
Now the Inverse
x is being:
1. multiplied by 2
2. Added by 5
1. Subtract 5
2. Divide by 2
x is being:
1. multiplied by -4
2. Added by 3
1. Subtract 3
2. Divide by -4
Now the Inverse
© Eugene Ruben Ramirez

4. What is happening to the variable?
Expression
Words
Inverse (Words)
x is being:
1. divided by 3
2. Subtracted by 5
1. Add 5
2. Multiply by 3
Now the Inverse
Now the Inverse
x is being:
1. Divided by 7
2. Multiplied by a -1
3. Added by 6
1. Subtract 6
2. Divide by a -1
3. Multiply by 7
© Eugene Ruben Ramirez

5. What is happening to the variable?
Expression
Words
Inverse (Words)
Now the Inverse
x is being:
1.multiplied by 2
2.divided by 5
3 subtracted by 4.
1. add 4
2. multiply by 5
3. divide 2
x is being:
1.multiplied by 3
2.divided by 7
3 multiplied by -1
4. Added by 8
Now the Inverse
1. subtracting 8
2. divide -1
3. multiply 7
4. divide 3
© Eugene Ruben Ramirez

6. What is happening to the variable?
Expression
Words
Inverse (Words)
x is being:
1. Added by 5
2. divided by 3
1. multiply by 3
2. subtract 5
Now the Inverse
Now the Inverse
x is being:
1. multiplied by -1
2. Added by 6
3. divided by 7
1. multiply by 7
2. subtract 6
3. divide by -1
© Eugene Ruben Ramirez

7. Solving Two Step Equations (Flow Map)
Box Variable
Separate Sides
Undo Addition or
Subtraction
(Additive Inverse)
Undo Multiplication
Or Division
(Multiplicative Inverse)
Box Your Answer
Check Your Answer!

8. Example 1: Solving Equations
Words
(left side of equals)
Inverse
Algebra
Box Variable
Separate Sides
x is being:
1. multiplied by 4
2. Subtracted by 5
1. adding 5
2. dividing 4
Undo Addition or
Subtraction
(Additive Inverse)
Undo Multiplication
Or Division
(Multiplicative Inverse)
Check: x=10
Box Your Answer
Check Your Answer!
© Eugene Ruben Ramirez

9. Practice 1: Solving Equations
Words
(left side of equals)
Inverse
Algebra
Box Variable
Separate Sides
x is being:
1. multiplied by -7
2. Added by 4
1. subtract 4
2. divide by -7
Undo Addition or
Subtraction
(Additive Inverse)
Undo Multiplication
Or Division
(Multiplicative Inverse)
Check: x=-3
Box Your Answer
Check Your Answer!
© Eugene Ruben Ramirez

10. Example 2: Solving Equations
Words
(right side of equals)
Inverse
Algebra
Box Variable
Separate Sides
m is being:
1. divided by 4
2. Added by 2
1. subtract 2
2. multiply by 4
Undo Addition or
Subtraction
(Additive Inverse)
Undo Multiplication
Or Division
(Multiplicative Inverse)
Check: m=32
Box Your Answer
Check Your Answer!
© Eugene Ruben Ramirez

11. Practice 2: Solving Equations
Words
(right side of equals)
Inverse
Algebra
Box Variable
Separate Sides
m is being:
1. multiplied by -1
2. Subtracted by 6
1. add 6
2. divide -1
Undo Addition or
Subtraction
(Additive Inverse)
Undo Multiplication
Or Divisiion
(Multiplicative Inverse)
Check: m=-32
Box Your Answer
Check Your Answer!
© Eugene Ruben Ramirez