The average temperatures for months of September to December in Medicine Hat, Alberta, one year were 15⁰C, 8⁰C, and -8⁰C. What was the average temperature for the four months?

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!