Question 915423
{{{5*(matrix(2,2,a,b,c,d))-(matrix(2,2,1.5,3.6,-0.3,2.8))=(matrix(2,2,0.2,1.3,-5.6,1.7))}}}
{{{(matrix(2,2,5a,5b,5c,5d))-(matrix(2,2,1.5,3.6,-0.3,2.8))=(matrix(2,2,0.2,1.3,-5.6,1.7))}}}
Then solve element by element,
{{{5a-1.5=0.2}}}
{{{5b-3.6=1.3}}}
{{{5c-(-0.3)=-5.6}}}
{{{5d-2.8=1.7}}}
I'll do the first you do the rest.
{{{5a=1.7}}}
{{{a=1.7/5}}}
{{{a=0.34}}}
Complete the others and the solution matrix will look like,
{{{x=(matrix(2,2,0.34,b,c,d))}}}