EKS 8.5E The amount of water a standard washing machine uses to wash clothes is varies directly with the number of loads of laundry. The washing machine uses 108 gallons of water to wash 3 loads of clothes. Wh rep rela hoi How many gallons of water will the washing machine use to wash 14 loads of clothes? ​

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.