Answer: the amount of rain last season is 14.5 inches
Explanation:
Let x represent the total amount of rain for last season. This spring it rained a total of 11.5inches. This was 3 inches less than the last spring. This means that the total amount of rain of rain for last season minus 3 inches = the total amount of rain for this season. The equation to find the amount of rain last season becomes
x - 3 = 11.5
x = 11.5 + 3 = 14.5 inches