Week 24,assuming that both machines are cleaned at week 0, because multiples of 12 are 12, 24,36. And multiples of 8 are 8, 16, 24. 24 is also the LCM.
Answer:
this is a no solution problem, nothing could sub for x and make this true
The car would travel 135 miles bc you multiply 81×5 and get 405 ,then divide that answer by 3