Answers

Subtract 21/80 from 40/28

1^st number: 1 12/28, 2^nd number: 21/80

40/28 - 21/80 is 653/560.

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,
   40/28 = 40 × 20/28 × 20 = 800/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   21/80 = 21 × 7/80 × 7 = 147/560
4. Subtract the two like fractions:
   800/560 - 147/560 = 800 - 147/560 = 653/560
5. In mixed form: 193/560

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