Answers

Subtract 35/90 from 28/20

1^st number: 1 8/20, 2^nd number: 35/90

28/20 - 35/90 is 91/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   28/20 = 28 × 9/20 × 9 = 252/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   35/90 = 35 × 2/90 × 2 = 70/180
4. Subtract the two like fractions:
   252/180 - 70/180 = 252 - 70/180 = 182/180
5. After reducing the fraction, the answer is 91/90
6. In mixed form: 11/90

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