Answers

Subtract 90/28 from 49/45

1^st number: 1 4/45, 2^nd number: 3 6/28

49/45 - 90/28 is -1339/630.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 28 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 45 × 28 = 1260,
   49/45 = 49 × 28/45 × 28 = 1372/1260
3. Likewise, for the 2nd fraction, since 28 × 45 = 1260,
   90/28 = 90 × 45/28 × 45 = 4050/1260
4. Subtract the two like fractions:
   1372/1260 - 4050/1260 = 1372 - 4050/1260 = -2678/1260
5. After reducing the fraction, the answer is -1339/630

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