Equation Solver

Enter Equation

What is an Equation?

An equation is a mathematical statement that asserts the equality of two expressions. Solving an equation means finding all values of the unknown variable(s) that make the equation true. These values are called solutions or roots of the equation.

An equation solver finds the values of unknown variables that make an equation true. Use our free calculator to solve any equation instantly with step-by-step solutions. Simply enter your equation like 2x + 5 = 11 or x^2 - 4 = 0 and get the solution with detailed explanations.

Key Facts About Equations

• •Linear equations (ax + b = c) have exactly one solution
• •Quadratic equations (ax² + bx + c = 0) have up to two solutions
• •The discriminant (b² - 4ac) determines the number of quadratic solutions
• •Polynomial equations of degree n have at most n real solutions
• •Some equations have no real solutions (only complex solutions)
• •Always check your solution by substituting back into the original equation
• •Equations can be transformed by performing the same operation on both sides
• •Division by zero is undefined - check for restrictions on the variable

Frequently Asked Questions