Because of the difference between the swings here we need to adjust the ball position to allow for this. As the iron swing is more upright, the club head will travel straighter down the target line, whereas the flatter driver swing will see more of an arc approach to the target line and therefore the ball.
For computers, see Lowest common denominator (computers) . In mathematics, the lowest common denominator or least common denominator (abbreviated LCD) is the least common multiple of the denominators of a set of fractions. It simplifies adding, subtracting, and comparing fractions.
OR - Divide one of the denominators by the GCF and multiply the answer by the other denominator (9/3=3, 3*12=36) Rename the fractions to use the Least Common Denominator(2/9=8/36, 3/12=9/36) The result is 8/36 + 9/36. Add the numerators and put the sum over the LCD = 17/36. Simplify the fraction if possible.