Answers

Subtract 7/80 from 28/72

28/72 - 7/80 is 217/720.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 72 × 10 = 720,
   28/72 = 28 × 10/72 × 10 = 280/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   7/80 = 7 × 9/80 × 9 = 63/720
4. Subtract the two like fractions:
   280/720 - 63/720 = 280 - 63/720 = 217/720

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