Write a linear equation

I don’t remember to much on how to write a linear equation but I did fine this . I hope there’s a step in there that makes you remember on how to write one.
If it doesn’t help I apologize .
Good luck

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,