@mathmate needed! i need step by step

Since for all , you can write as a first step



Then for , you can eliminate both factors of in the numerator and denominator to end up with .

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!