Answers

Subtract 72/30 from 5/42

1^st number: 5/42, 2^nd number: 2 12/30

5/42 - 72/30 is -479/210.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 42 × 5 = 210,
   5/42 = 5 × 5/42 × 5 = 25/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   72/30 = 72 × 7/30 × 7 = 504/210
4. Subtract the two like fractions:
   25/210 - 504/210 = 25 - 504/210 = -479/210

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