Answers

Subtract 70/54 from 2/21

1^st number: 2/21, 2^nd number: 1 16/54

2/21 - 70/54 is -227/189.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 21 × 18 = 378,
   2/21 = 2 × 18/21 × 18 = 36/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   70/54 = 70 × 7/54 × 7 = 490/378
4. Subtract the two like fractions:
   36/378 - 490/378 = 36 - 490/378 = -454/378
5. After reducing the fraction, the answer is -227/189

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