Answers

Subtract 25/90 from 42/28

1^st number: 1 14/28, 2^nd number: 25/90

42/28 - 25/90 is 11/9.

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,
   42/28 = 42 × 45/28 × 45 = 1890/1260
3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
   25/90 = 25 × 14/90 × 14 = 350/1260
4. Subtract the two like fractions:
   1890/1260 - 350/1260 = 1890 - 350/1260 = 1540/1260
5. After reducing the fraction, the answer is 11/9
6. In mixed form: 12/9

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