Answers

Subtract 35/90 from 30/21

1^st number: 1 9/21, 2^nd number: 35/90

30/21 - 35/90 is 131/126.

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,
   30/21 = 30 × 30/21 × 30 = 900/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   35/90 = 35 × 7/90 × 7 = 245/630
4. Subtract the two like fractions:
   900/630 - 245/630 = 900 - 245/630 = 655/630
5. After reducing the fraction, the answer is 131/126
6. In mixed form: 15/126

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