Question 901695
{{{G=(matrix(2,3,3,-1,-2,0,4,6))}}}
{{{H=(matrix(2,3,-7,5,1,1,6,-1))}}}
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{{{-5G+3H=(-5)*(matrix(2,3,3,-1,-2,0,4,6))+3*(matrix(2,3,-7,5,1,1,6,-1))}}}
{{{-5G+3H=(matrix(2,3,-15,5,10,0,-20,-30))+(matrix(2,3,-21,15,3,3,18,-3))}}}
{{{-5G+3H=(matrix(2,3,-15-21,5+15,10+3,0+3,-20+18,-30-3))}}}
{{{-5G+3H=(matrix(2,3,-36,20,13,3,-2,-33))}}}