I would like to get at least one solution for one t for this:
row_sum(Y) = x.t + row_sum(B)
Y and B are matrix(n, m) and x a vector(n). I know B, I know row_sum(Y) but not x. I would like to get the Y and x for some t value. Y variate linearly with t but x is constant vector.
How I can get create an equation with the sum of row on Y and B to get at the same times x and Y?