Answers

Subtract 49/30 from 30/21

1^st number: 1 9/21, 2^nd number: 1 19/30

30/21 - 49/30 is -43/210.

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,
   30/21 = 30 × 10/21 × 10 = 300/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   49/30 = 49 × 7/30 × 7 = 343/210
4. Subtract the two like fractions:
   300/210 - 343/210 = 300 - 343/210 = -43/210

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