Answers

Subtract 81/30 from 16/56

1^st number: 16/56, 2^nd number: 2 21/30

16/56 - 81/30 is -169/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 30 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 56 × 15 = 840,
   16/56 = 16 × 15/56 × 15 = 240/840
3. Likewise, for the 2nd fraction, since 30 × 28 = 840,
   81/30 = 81 × 28/30 × 28 = 2268/840
4. Subtract the two like fractions:
   240/840 - 2268/840 = 240 - 2268/840 = -2028/840
5. After reducing the fraction, the answer is -169/70

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