Question 864076
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Hi
2x- y = -2
 x - 2y = 14
x = 18/-3 = -6,   y = 30/-3 =  -10
{{{D =matrix(2,2,2,-1,1,-2)}}} = -3
{{{D[y] =matrix(2,2,2,-2,1,14)}}}  =  30
{{{D[x] =matrix(2,2,-2,-1,14,-2)}}}  = 18