Answers

Subtract 56/21 from 56/18

1^st number: 3 2/18, 2^nd number: 2 14/21

56/18 - 56/21 is 4/9.

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,
   56/18 = 56 × 7/18 × 7 = 392/126
3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
   56/21 = 56 × 6/21 × 6 = 336/126
4. Subtract the two like fractions:
   392/126 - 336/126 = 392 - 336/126 = 56/126
5. After reducing the fraction, the answer is 4/9

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