Answers

Subtract 42/40 from 60/21

1^st number: 2 18/21, 2^nd number: 1 2/40

60/21 - 42/40 is 253/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 21 × 40 = 840,
   60/21 = 60 × 40/21 × 40 = 2400/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   42/40 = 42 × 21/40 × 21 = 882/840
4. Subtract the two like fractions:
   2400/840 - 882/840 = 2400 - 882/840 = 1518/840
5. After reducing the fraction, the answer is 253/140
6. In mixed form: 1113/140

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