Algrebra word problem

Question

Tom is 4 more than twice Andrews age. Sara is 8 less than 5 times Andrews age. If Tom and Sara are twins, how old is Andrew?

Answer 1

Let x = Andrew's age

Let 2x + 4 = Tom's age

Let 5x - 8 = Sara's age

Since Tom and Sara are twins,

5x - 8 = 2x + 4

3x = 12

x = 4 years, Andrew's age