Isolate terms with y to solve this literal equation.

Subtract zy from each side:

zy - dm - zy = ky/t - zy

Cancel the zy terms on the left side, we get:

-dm = ky/t - zy

Factor out y:

y(k/t - z) = -dm

Divide each side by (k/t - z)

y = -dm/(k/t - z)

(k/t - z) can be rewritten as (k - tz)/t

We multiply -dm by the reciprocal of this quotient to get our simplified literal equation:

y =

**-dmt/(k - tz)**