Answers

  • Brainly User
2015-12-06T19:10:29+08:00
Present ages:

Gustav's ages: x
His father: 7x

Ages one year ago:
Gustav's age: x - 1
His father: 7x -1

Equation:
9(x-1) = 7x - 1
9x - 9 = 7x - 1
9x - 7x = 1 + 9
2x = 10
2x/2 = 10/2
x = 5

ANSWER:   Gustav's present age is 5 years.

Check:
Gustav's father is seven times as old as he is.

Gustav = 5 years old
His father = 7 (x) = 35 years old



0