Answers

Subtract 70/60 from 21/54

1^st number: 21/54, 2^nd number: 1 10/60

21/54 - 70/60 is -7/9.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 60 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 54 × 10 = 540,
   21/54 = 21 × 10/54 × 10 = 210/540
3. Likewise, for the 2nd fraction, since 60 × 9 = 540,
   70/60 = 70 × 9/60 × 9 = 630/540
4. Subtract the two like fractions:
   210/540 - 630/540 = 210 - 630/540 = -420/540
5. After reducing the fraction, the answer is -7/9

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