Equation Solution Checker

Solving an equation is only half the job. A reliable way to check the answer is to substitute the proposed value for x and see whether the left side equals the right side. This checker does that substitution locally in your browser. Type the equation with one equals sign, enter the value for x, and use * when you mean multiplication, such as 4*x instead of 4x.

The tool evaluates both sides using normal arithmetic order, then reports the value of each side. If they match, the solution satisfies the equation. If they do not, the result tells you that the proposed x-value is not a solution, which usually means an inverse operation, sign, or distribution step needs another look. For longer algebra work where you want feedback on each line, the photo checker can grade the full handwritten solution.