You are playing a card game with friends. at one point, you double your score. in the next hand you lose 75 points. you end up with -25 points. how many points did u have before doubling your score

Let x be your initial score.

You double it, so your score becomes 2x.

You lose 75 points, so your score becomes 2x-75

This equals -25, so we have the following equation:

In fact, things went like this:

You start with 25 points

You double your score, and you have 50 points

You lose 75 points and end with -25 points.