Answers

Subtract 15/21 from 49/18

1^st number: 2 13/18, 2^nd number: 15/21

49/18 - 15/21 is 253/126.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 21 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   49/18 = 49 × 7/18 × 7 = 343/126
3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
   15/21 = 15 × 6/21 × 6 = 90/126
4. Subtract the two like fractions:
   343/126 - 90/126 = 343 - 90/126 = 253/126
5. In mixed form: 21/126

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