Question 886080
Jack and Jill each own a collection of mp3 files. Jill has six mp3 files less than three times the number that Jack has. If Jill owns 135 mp3 files, then how many does Jack own?
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let x=number of mp3 files Jack owns

3x-6=135(six mp3 files less than three times the number that Jack has)
3x=141
x=47
number of mp3 files Jack owns=47