25 divided by 42 is 0.595 However, if you mean 25:42, as in a ratio(Which makes more sense), then the answer isn't much different. 25:42 is already in it's simplest ratio form, and brought down to a decimal, it is, again, 0.595
The GCF is based upon what integer divides evenly into two numbers; the LCM is based upon what integer two numbers share in a list of multiples. The GCF must be a prime number; the LCM must be a composite number.
