Examples for

# Equation Solving

Algebraic equations consist of two mathematical quantities, such as polynomials, being equated to each other. Solving equations yields a solution for the independent variables, either symbolic or numeric. In addition to finding solutions to equations, Wolfram|Alpha also plots the equations and their solutions.

### Equations

Solve, plot and examine equations with one or more variables.

#### Solve a linear equation:

#### Solve a polynomial equation:

#### Solve over a specified domain:

#### Solve an equation with parameters:

#### Solve a trigonometric equation:

### Systems of Congruences

Find solutions to systems of congruence relations.

#### Solve a single congruence equation:

#### Solve systems of congruences:

#### Check if values are equivalent under a given modulus:

#### Solve a congruence involving variables in the modulus:

#### Solve systems with each equation under a different modulus:

#### Solve multivariate systems of congruences:

### Systems of Equations

Solve a set of two or more simultaneous equations.

#### Solve a system of linear equations:

#### Solve a system of polynomial equations:

Use numerical approximation methods to solve an equation.