Distance between -5 and 12.
2 answers:
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Write the system in augmented-matrix form:
Multiply through row 1 by 1/2:
Add -1(row 1) to row 3, and add -5(row 1) to row 2:
Swap rows 2 and 3:
Add -7(row 2) to row 3:
Multiply through row 3 by -1/42:
Add 5(row 3) to row 2:
Add -1(row 2) and -2(row3) to row 1:
So the solution to the system is