Answers

Subtract 70/90 from 49/28

1^st number: 1 21/28, 2^nd number: 70/90

49/28 - 70/90 is 35/36.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 90 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 28 × 45 = 1260,
   49/28 = 49 × 45/28 × 45 = 2205/1260
3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
   70/90 = 70 × 14/90 × 14 = 980/1260
4. Subtract the two like fractions:
   2205/1260 - 980/1260 = 2205 - 980/1260 = 1225/1260
5. After reducing the fraction, the answer is 35/36

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