Question 1061766
{{{(matrix(2,3,
1,2,1,
3,-1,-11))}}}
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Replace {{{R[1]}}} with {{{R[1]+2*R[2]}}}
{{{(matrix(2,3,
7,0,-21,
3,-1,-11))}}}
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Divide {{{R[1]}}} by 7,
{{{(matrix(2,3,
1,0,-3,
3,-1,-11))}}}
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Replace {{{R[2]}}} with {{{3R[1]-R[2]}}},
{{{(matrix(2,3,
1,0,-3,
0,1,2))}}}
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{{{x=-3}}}
{{{y=2}}}