Answers

Subtract 49/10 from 75/21

1^st number: 3 12/21, 2^nd number: 4 9/10

75/21 - 49/10 is -93/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 10 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 21 × 10 = 210,
   75/21 = 75 × 10/21 × 10 = 750/210
3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
   49/10 = 49 × 21/10 × 21 = 1029/210
4. Subtract the two like fractions:
   750/210 - 1029/210 = 750 - 1029/210 = -279/210
5. After reducing the fraction, the answer is -93/70

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