Answers

Subtract 7/80 from 45/28

1^st number: 1 17/28, 2^nd number: 7/80

45/28 - 7/80 is 851/560.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 28 × 20 = 560,
   45/28 = 45 × 20/28 × 20 = 900/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   7/80 = 7 × 7/80 × 7 = 49/560
4. Subtract the two like fractions:
   900/560 - 49/560 = 900 - 49/560 = 851/560
5. In mixed form: 1291/560

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