well first you have to flip one of the fractions, so for example 7/24 x 48/35 which should give you an answer of 336/840. If you simplify this down you should get 4/10. Another way of double-checking or simplifying is by dividing 336 by 840 (which should give you 0.4) and dividing 4 by 10 (which should also give you 0.4). Hope this helps!
