Answers

Subtract 70/42 from 21/10

1^st number: 2 1/10, 2^nd number: 1 28/42

21/10 - 70/42 is 13/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 42 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 10 × 21 = 210,
   21/10 = 21 × 21/10 × 21 = 441/210
3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
   70/42 = 70 × 5/42 × 5 = 350/210
4. Subtract the two like fractions:
   441/210 - 350/210 = 441 - 350/210 = 91/210
5. After reducing the fraction, the answer is 13/30

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