Pre-Algebra
Lesson 5.5
Equations with Mixed Operations
Go to this site:

http://www.add2nb.com/

Equations with Mixed Operations
Solve for x:

3x + 5 = 23

To solve the equation above, what steps should
be done?
First step

Second Step
P
E
MD
AS

SA
DM
E
P
PEMDAS

vs.

SADMEP

Simplify

Solve

Expressions

Equations

Example:

(3 + 4) 3
2

x

3

Example:

- 5 = -6
Solve = get it by itself
Steps to solving equations:
1. Combine like terms on each side of the
equal sign.
2. Move terms to the correct side by usi...
Solve:

x
3

- 10 = -2

1. combine
2. move
3. Simplify
Solve:

3n = 64 - 5n

1. combine
2. move
3. Simplify
Solve:

9 + 5x - 3x = 10 + 13

1. combine
2. move
3. Simplify
Pre-Alg 5.5 Equations with Mixed Operations
Pre-Alg 5.5 Equations with Mixed Operations
Pre-Alg 5.5 Equations with Mixed Operations
Pre-Alg 5.5 Equations with Mixed Operations
Pre-Alg 5.5 Equations with Mixed Operations
Pre-Alg 5.5 Equations with Mixed Operations
Pre-Alg 5.5 Equations with Mixed Operations
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Pre-Alg 5.5 Equations with Mixed Operations

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Pre-Alg 5.5 Equations with Mixed Operations

  1. 1. Pre-Algebra Lesson 5.5 Equations with Mixed Operations
  2. 2. Go to this site: http://www.add2nb.com/ Equations with Mixed Operations
  3. 3. Solve for x: 3x + 5 = 23 To solve the equation above, what steps should be done? First step Second Step
  4. 4. P E MD AS SA DM E P
  5. 5. PEMDAS vs. SADMEP Simplify Solve Expressions Equations Example: (3 + 4) 3 2 x 3 Example: - 5 = -6
  6. 6. Solve = get it by itself
  7. 7. Steps to solving equations: 1. Combine like terms on each side of the equal sign. 2. Move terms to the correct side by using SADMEP 3. Simplify using Inverse Operations
  8. 8. Solve: x 3 - 10 = -2 1. combine 2. move 3. Simplify
  9. 9. Solve: 3n = 64 - 5n 1. combine 2. move 3. Simplify
  10. 10. Solve: 9 + 5x - 3x = 10 + 13 1. combine 2. move 3. Simplify

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