Examples
[1235][1235]
Step 1
Step 1.1
Perform the row operation R2=R2-3R1R2=R2−3R1 to make the entry at 2,12,1 a 00.
[123-3⋅15-3⋅2][123−3⋅15−3⋅2]
Step 1.2
Simplify R2R2.
[120-1][120−1]
[120-1][120−1]
Step 2
Step 2.1
Multiply each element of R2R2 by -1−1 to make the entry at 2,22,2 a 11.
[12-0--1][12−0−−1]
Step 2.2
Simplify R2R2.
[1201][1201]
[1201][1201]
Step 3
Step 3.1
Perform the row operation R1=R1-2R2R1=R1−2R2 to make the entry at 1,21,2 a 00.
[1-2⋅02-2⋅101][1−2⋅02−2⋅101]
Step 3.2
Simplify R1R1.
[1001][1001]
[1001][1001]