Samuel and Jackson are brothers. Samuel is three years older than twice the age of Jackson. If the sum of their ages is 18, how old are the brothers?

Question

I need to know how to write the equation

Answer 1

s = 3+ 2j

s+j = 18

3+2j+j = 18

3j = 15

j = 5 years old = jay's current age

s = 13 years old = same current age