Question 1091823
Add {{{R[1]}}} and {{{R[2]}}} to eliminate {{{a}}},
{{{2a+3b-5c-2a-2b-c=-5-14}}}
{{{R[4]}}}:{{{b-6c=-19}}}
Multiply {{{R[1]}}} by {{{R[2]}}} and subtract from {{{R[3]}}} to eliminate {{{a}}},
{{{4a-4b+4c-4a-6b+10c=-4+10}}}
{{{R[5]}}}:{{{-10b+14c=6}}}
Multiply {{{R[4]}}} by 10 and add to {{{R[5]}}} to eliminate {{{b}}}.
{{{10b-60c-10b+14c=-190+6}}}
{{{-46c=-184}}}
{{{c=(-184)/(-46)}}}
Solve for {{{c}}} then work backwards to solve for {{{b}}} and then {{{a}}}.