Systems of linear equations

Prepare for an algebra exam and master solving systems of linear equations with matrices.

1.

3x3

x + y + z =
x + y + z =
x + y + z =

2x2

x + y =
x + y =

4x4

x + y + z + w =
x + y + z + w =
x + y + z + w =
x + y + z + w =

2. Options

 
In mathematics, a system of linear equations (or linear system) is a collection of linear equations involving the same set of variables. A solution to a linear system is an assignment of numbers to the variables such that all the equations are simultaneously satisfied. (source: wikipedia.org)