Pre-Algebra

Lesson 5.5

Equations with Mixed Operations

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Equations with Mixed Operations

3x + 5 = 23Solve for x:

First step Second Step

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

P

E

MD

AS

SA

DM

E

P

EquationsExpressions

PEMDAS SADMEPvs.

Simplify Solve

(32 + 4) 3 - 5 = -6x3

Example: Example:

Solve = get it by itself

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

Steps to solving equations:

Solve: - 10 = -2x3

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