>>602133take F on Numeber 6 for example.
first you have to subtreact 268 from both sides.
then divide everything in the parenthesis by 12 (distributative property)
after that, try to brute force it to get what you want
I can tell you that for this equation, -20 is -268, but -8 is 267 which is not the answer we want so we would have to move onto a different problem and solve again.