# 7.2: Solve for the Unknown

**At Grade**Created by: CK-12

**Solve for the Unknown - Apply Order of Operations**

**Teacher Notes**

Presented with an equation with one unknown, students follow the rule for the order of operations to solve for the value of the unknown. In all equations, unknowns are presented alone as one of the expressions of the equation. All computations are performed on the other expression. The operations to be performed are those in parentheses first, followed, from left to right, by multiplication and division, and then by addition and subtraction.

**Solutions**

Figure out the value of each variable.

Follow the order of operations:

Parenthesis first

Multiplication and division (left to right)

Addition and subtraction (left to right)