Substitute x into one equation: 30 + y = 50 → y = 20.

Sat, 02 May 2026 22:40:04 +0000

Understanding Linear Equations: How to Substitute x and Solve for y Using 30 + y = 50 Learning algebra begins with mastering basic linear equations, and one of the most foundational steps is understanding how to isolate variables — especially when substituting values or solving stepwise. A classic example is the equation: 30 + y = 50 In this beginner-friendly guide, we’ll explore how substituting x (or more accurately resolving for y) helps clarify the relationship in this equation, while demonstrating key concepts every learner should grasp.