📐 Calculators

Linear Equation Solver

Solve first-degree equations (ax + b = 0) instantly. Enter the coefficients and see the value of x with step-by-step solution.

Enter the coefficients of the equation ax + b = 0

x +

= 0

How to solve a linear equation?

A linear equation has the form ax + b = 0, where a ≠ 0. The solution is: x = −b ÷ a.

Example: 3x + 9 = 0 → x = −9 ÷ 3 = −3.

Convert Arabic numbers to Roman numerals and vice versa. Supports values from 1 to 3999. Instant bidirectional conversion.

Calculate the Greatest Common Divisor (GCD) of two or more numbers using the Euclidean algorithm. Instant result.

Calculate the Least Common Multiple (LCM) of two or more numbers. Instant result in the browser.