Here we will convert the number 42.15 to a fraction.
42.15 is the same as 42.15/1, because 42.15 divided by 1 is 42.15.
Therefore, we can multiply both the numerator and denominator in 42.15/1 by 100 to get rid of the decimal point and make it into a fraction as follows:
42.15/1 x 100/100 = 4215/100
Then, we simplify the fraction if necessary and we have our answer:
42.15 = 42 3/20
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