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Both calculators run independently — change the inputs on either side to compare results.

Linear Equation Solver

Solve any single-variable linear equation of the form ax + b = 0 for the unknown x. The simplest non-trivial equation in algebra, this is the building block for systems of equations, slope-intercept lines, and almost every applied modelling problem.

Coefficient a

Constant b

Algebra

Quadratic Formula Calculator

Finds all real solutions to any quadratic equation of the form ax² + bx + c = 0. Use it when factoring is difficult or impossible and you need exact roots fast.

Coefficient a

Coefficient b

Coefficient c

Key differences

	Linear Equation Solver	Quadratic Formula Calculator
Category	Algebra	Algebra
Inputs required	2	3
Result	Solution (x)	First Root (x₁)
What it does	Solve any single-variable linear equation of the form ax + b = 0 for the unknown x. The simplest non-trivial equation in algebra, this is the building block for systems of equations, slope-intercept lines, and almost every applied modelling problem.	Finds all real solutions to any quadratic equation of the form ax² + bx + c = 0. Use it when factoring is difficult or impossible and you need exact roots fast.