Answers

Subtract 28/90 from 35/21

1^st number: 1 14/21, 2^nd number: 28/90

35/21 - 28/90 is 61/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 21 × 30 = 630,
   35/21 = 35 × 30/21 × 30 = 1050/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   28/90 = 28 × 7/90 × 7 = 196/630
4. Subtract the two like fractions:
   1050/630 - 196/630 = 1050 - 196/630 = 854/630
5. After reducing the fraction, the answer is 61/45
6. In mixed form: 116/45

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