Question 1076934
s+d+t+h=262
h-3=t
d=3h
s=45t
substitute
45t+3h+t+h-3=262
but h=3+t
45t+3(3+t)+t+t+3=262
45t+9+3t+2t+3=262
50t=250
t=5
h=8
d=24
s=225
1===1===1===1===262
0===0==-1===1====3
0===1==0===-3====0
1===0==-45==0====0

That is the matrix.