John was going on vacation he took three bags. Two bags weighed exactly the same and the other bag weighed 4 kg. Together his bags weighted 35 kgs what was the weight of each of his other bags?

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!