Answers

Subtract 21/80 from 54/7

1^st number: 7 5/7, 2^nd number: 21/80

54/7 - 21/80 is 4173/560.

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,
   54/7 = 54 × 80/7 × 80 = 4320/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   21/80 = 21 × 7/80 × 7 = 147/560
4. Subtract the two like fractions:
   4320/560 - 147/560 = 4320 - 147/560 = 4173/560
5. In mixed form: 7253/560

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