Solve for xxx in terms of aaa and bbb: ax−b=bx+aax - b = bx + aax−b=bx+a.
x=a+ba−bx = \frac{a+b}{a-b}x=a−ba+b
x=1x = 1x=1
x=a−ba+bx = \frac{a-b}{a+b}x=a+ba−b
x=a+bx = a+bx=a+b