Which expression has a value that is equivalent to 5n+13 when n= -15

Which expression has a value that is equivalent to 5n+13 when n=-15 
4n+8

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!