Answers

Subtract 15/80 from 21/56

21/56 - 15/80 is 3/16.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 56 × 10 = 560,
   21/56 = 21 × 10/56 × 10 = 210/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   15/80 = 15 × 7/80 × 7 = 105/560
4. Subtract the two like fractions:
   210/560 - 105/560 = 210 - 105/560 = 105/560
5. After reducing the fraction, the answer is 3/16

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