# Linear Equation Solver

Description| How it works| Electric CircuitsThis is a tool to solve a system of linear equations. It can solve up to 20 simultaneous equations

## Download

.xls file (21 KB)## How to use

To solve the system Ax = b, first key in the number of equations
into the cell C4.

Then key in the matrix A into the yellow cells and b into the blue
cells.

The solution x is obtained in column X, it is highlighted in green.

This screenshot shows the entries and solution for the following
system:

2x_{1} + 3x_{2} + 3x_{3} = 1

2x_{1} + 3x_{2} + 2x_{3} = 1

3x_{1} + 3x_{2} + 3x_{3} = 3

The solution obtained is x_{1} = 2, x_{2} = -1 and x_{3
}= 0.

## Also See:

Non-linear Equation SolverSimultaneous Non-linear Equation Solver

Coupled ODE Solver

Calculus of a Single Variable