Work out the required term of the sequence: if tn = n-5, find the t40

In the 40th term, n = 40, so t40 = 40 - 5 = 35

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!