584 = 16D - 60.8 how to finish this equation?

Add 60.8 to each side

644.8=16D

Divide 16 on both sides

40.3=D

584 = 16D - 60.8

Now you add 60.8 on the other side and you change the sign, from - to +

584 + 60.8 = 16D ⇒ 644.8 = 16D

Now you add 16 to the other side, you can say that 16D is 16 * D and you change the sign again.

644.8 : 16 = D, now you just solve that

D = 40.3

Let's check it:

16 * 40.3 - 60.8 = 644.8 - 60.8 = 584 SO D = 40.3