Answers

Subtract 81/84 from 42/16

1^st number: 2 10/16, 2^nd number: 81/84

42/16 - 81/84 is 93/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 84 is 336
   
   Next, find the equivalent fraction of both fractional numbers with denominator 336
2. For the 1st fraction, since 16 × 21 = 336,
   42/16 = 42 × 21/16 × 21 = 882/336
3. Likewise, for the 2nd fraction, since 84 × 4 = 336,
   81/84 = 81 × 4/84 × 4 = 324/336
4. Subtract the two like fractions:
   882/336 - 324/336 = 882 - 324/336 = 558/336
5. After reducing the fraction, the answer is 93/56
6. In mixed form: 137/56

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