Get rid of the fraction by multiplying both sides of the equation by the LCM of the denominators ( 1 and x ). The LCM is x NOTE: y=y∕1 (Every number or letter is being divided by 1) ⇒y×x=n−x Move the x at the right to the left in order for n to stand alone (the subject) ⇒yx+x=n Factorize x out at the left side of the equation ⇒x(y+1)=n ⇒n=x(y+1)