Example:
20/17 minus 1
20/17 minus 17/17
3/17
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If the numerator and denominator are the same, the fraction simplifies to 1. And you should be able to subtract 1!
Change the whole number into an improper fraction with the same denominator as the fraction and then subtract accordingly
You convert the mixed numeral into an improper fraction. Now subtract the improper fraction from the whole number by putting the whole number over 1.
Change 1 to a fraction and subtract the numerators. EXAMPLE: 1 - 2/5 = 5/5 - 2/5 = 3/5
Just the fraction, 1/2. Or, you could subtract 1/2 from 1, or add 1/2 to 0. It's pretty easy.