The denominators 6 and 10 both have 30 in common. So lets get the common denominator. it is 9/10=27/30 and 5/6=25/30. It should be 27/30+25/30 which is 52/30 which can be simplified down to 26/15. This is your final answer
If gas costs $3.75 per gallon and Berto has $12, then he can purchase 12/3.75 gallons. This is approximately 3.2 gallons. So the coordinate on this line would be (3.2, 12).
