Answers

Subtract 98/27 from 27/21

1^st number: 1 6/21, 2^nd number: 3 17/27

27/21 - 98/27 is -443/189.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 27 is 189
   
   Next, find the equivalent fraction of both fractional numbers with denominator 189
2. For the 1st fraction, since 21 × 9 = 189,
   27/21 = 27 × 9/21 × 9 = 243/189
3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
   98/27 = 98 × 7/27 × 7 = 686/189
4. Subtract the two like fractions:
   243/189 - 686/189 = 243 - 686/189 = -443/189

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