# 8.3: Solve for Unknowns

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

**Solve for Unknowns – Apply the Distributive Property**

**Teacher Notes**

To solve for values of unknowns in equations, students perform all computations following the order of operations: operations in parentheses first, followed by exponentiation, multiplication and division left to right, then addition and subtraction left to right. When the variable is in parentheses, students must apply the distributive property of multiplication over addition: . Encourage students to check by replacing the variable in the equation with its value, perform the computations, and verify that the two expressions (to the left and to the right of the = symbol) name the same number.

**Solutions:**

**Solve for Unknowns – Apply the Distributive Property**

**What is the value of ?**

Solve for the unknown.

Follow the order of operations. Show each step.

*Extra for Experts:***Solve for Unknowns – Apply the Distributive Property**

Solve for the unknown.

Follow the order of operations. Show each step.

**Solutions:**