TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: solve the equation for x : 6 x - 47 + 3 x = 4 + 9 - x

SOLUTION: 

PROBLEM: Problem: if each participant of a chess tournament plays exactly one game with each of the remaining participants , then 153 games will be played during the tournament . find the number of participants .

SOLUTION: 18

PROBLEM: Problem: earl can stuff advertising circulars into envelopes at the rate of 36 envelopes per minutes and ellen requires a minutes and half to stuff the same number of envelops . working together , how long will it take earl and ellen to stuff 240 envelopes

SOLUTION:
4 minute