math

You should multiply the denominator by the whole number and then add the numerator. This makes your new numerator and then put that over the original denomintor. Now that was kind of a mouth full so let me show you an example:

4 and 7/8

multiply denominator (8) by the whole number (4) = 32

now add that number to the numerator : 32 + 7 = 39

This number is now your new numerator, and you now put it over the original demoninator

so your answer is 39/8. :D
 
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