Question 94333
When you multiply a scalar value (any single number) by a matrix, you simply multiply that scalar value by every matrix entry.
So if you have the matrix

{{{(matrix(3,3,3,-2,0,1,4,2,-1,5,-3))}}}

and you want to multiply that matrix by the scalar value of -3, then you simply multiply -3 by every matrix entry like this:

{{{(matrix(3,3,3*-3,-2*-3,0*-3,1*-3,4*-3,2*-3,-1*-3,5*-3,-3*-3))}}} 

which then comes to be 

{{{(matrix(3,3,-9,6,0,-3,-12,-6,3,-15,9))}}}




So if {{{A=(matrix(3,3,3,-2,0,1,4,2,-1,5,-3))}}}, 



then {{{-3A=(matrix(3,3,-9,6,0,-3,-12,-6,3,-15,9))}}}