# Section 7.2: Solving Linear Systems by Substitution

**Textbook Section 7.2: Solving Linear Systems by Substitution**

Textbook Section 7.2: Solving Linear Systems by Substitution

**Learning Objectives**

• Solve systems of equations with two variables by substituting for either variable.

• Manipulate standard form equations to isolate a single variable.

• Solve real-world problems using systems of equations.

• Solve mixture problems using systems of equations.

**Section 7.2 Videos**

**Video Lessons**

**Video Examples**

- Ex 1: Solve a System of Equations Using Substitution
- Ex 2: Solve a System of Equations Using Substitution
- Ex 3: Solve a System of Equations Using Substitution
- Ex: System of Equations Application - Number Problem Using Substitution
- Ex: System of Equations Application - Entrance Fees
- Ex: System of Equations Application - Commission and Salary
- Ex: System of Equations Application - Investment Accounts
- Ex: System of Equations Application - Mixture Problem

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