Jonathan is 5 years older than his brother Chase. The sum of Chase's age and three times Jonathan's age is 55. Which equations can be used to determine Chase's age, c?
Jonathan is 5 year older is saying that he is + 5 years older. The sum of Chase's age and three time Jonathan's age is just 3c because 3c is just 3 times c and sum is another term for equals. You also don't know chase's age so that's why C is a variable for chase
