After studying this section, you will be able to:
1. Solve equations of the form x+b=c using the addition principle.
2. Using the Addition Principle
When we use the equals sign (=), we indicate that two expressions are equal in value. This is called an equation. For example, x+5=23 is an equation. By choosing certain procedures, you can go step by step from a given equation to the equation x = some number. The number is the solution to the equation.