Algebra-1

Question Analysis
This question tests the student's ability to solve a multi-step equation with variables on both sides. The goal is to isolate the variable on one side of the equation.

Key Concept Explanation
The key concept here is to use inverse operations to combine like terms and isolate the variable. This involves subtracting from both sides and then subtracting 9 from both sides to solve for .

Step-by-step Solution
1. Subtract from both sides: