Step1
Convert your liner simultaneous equations to a matrix.
Step2
Forward erasure 1
Forward erasure 2
Forward erasure 3
Before moving from Step2 to Step3
Step3
Backward substitution 1
Backward substitution 2
Backward substitution 3
Backward substitution 4
Backward substitution 5
Backward substitution 6
Step4
Convert the matrix to your liner simultaneous equations.
