Age problem related to equation

Question

mark is 5 years younger than 2 times stevens age. if steve is 12 how old is mark

Answer 1

Steve is 12

2 times Steve's age is 24

Thats because 12x2=24

Since Mark's age is 5 years younger than 2 times Steve's age then; 24-5=19

Which means Mark is 19 years old.