Answers

Subtract 70/27 from 4/21

1^st number: 4/21, 2^nd number: 2 16/27

4/21 - 70/27 is -454/189.

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,
   4/21 = 4 × 9/21 × 9 = 36/189
3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
   70/27 = 70 × 7/27 × 7 = 490/189
4. Subtract the two like fractions:
   36/189 - 490/189 = 36 - 490/189 = -454/189

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