Hello there!
Just use algebra and cross multiply :)
14/12 = d/48
(14 * 48) = 12d
672 = 12d
56 = d
You can check this by plugging 56 for d and simplifying the two fractions to see if they are equal.
14/12 = 7/6
56/48 = 7/6
So, d=56 is correct.
Hope this helps!
