Answers

Subtract 70/45 from 21/10

1^st number: 2 1/10, 2^nd number: 1 25/45

21/10 - 70/45 is 49/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 45 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 10 × 9 = 90,
   21/10 = 21 × 9/10 × 9 = 189/90
3. Likewise, for the 2nd fraction, since 45 × 2 = 90,
   70/45 = 70 × 2/45 × 2 = 140/90
4. Subtract the two like fractions:
   189/90 - 140/90 = 189 - 140/90 = 49/90

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