Answers

Subtract 3/80 from 81/7

1^st number: 11 4/7, 2^nd number: 3/80

81/7 - 3/80 is 6459/560.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 7 × 80 = 560,
   81/7 = 81 × 80/7 × 80 = 6480/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   3/80 = 3 × 7/80 × 7 = 21/560
4. Subtract the two like fractions:
   6480/560 - 21/560 = 6480 - 21/560 = 6459/560
5. In mixed form: 11299/560

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