Hey all,

I'm

new here and I'm relearning the basic rules of algebra and I've come across a problem:

(this is the simplified equation just for demonstration purposes, I've also used an image not knowing how to represent fractions here)

1st: I thought when transferring a value from one side to the other, you had to change it from negative to positive and vice-versa. Does this rule not apply because the -91 is a coefficient?

2nd: Is it a general rule that a negative over a negative can be put positive? I've tried both 168/91 AND -168/-91 and they both give 1.85 (rounded).

Thanks for any help on this. I know this looks real simple but I've forgotten most algebra "rules". I've got so many more questions, but I guess this one is the most important for today without spamming your board.