Answers

Subtract 49/30 from 42/21

1^st number: 2 0/21, 2^nd number: 1 19/30

42/21 - 49/30 is 11/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 21 × 10 = 210,
   42/21 = 42 × 10/21 × 10 = 420/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   49/30 = 49 × 7/30 × 7 = 343/210
4. Subtract the two like fractions:
   420/210 - 343/210 = 420 - 343/210 = 77/210
5. After reducing the fraction, the answer is 11/30

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