Question

Please explain step by step.

D = r+(D/t)  solve for D

Answer 1

The Equation is

D  =  r + ( D / t ) 

Subtract ' (D/t) ' from each side

D - (D/t) =  r + ( D / t ) - (D/t)

(Dt - D ) / t  =  r

D(t - 1) / t  =  r

D(t - 1)  =  tr

D  =  tr / (t - 1)

Answer :

D  =  tr / (t - 1)