Answers

Subtract 56/90 from 36/21

1^st number: 1 15/21, 2^nd number: 56/90

36/21 - 56/90 is 344/315.

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,
   36/21 = 36 × 30/21 × 30 = 1080/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   56/90 = 56 × 7/90 × 7 = 392/630
4. Subtract the two like fractions:
   1080/630 - 392/630 = 1080 - 392/630 = 688/630
5. After reducing the fraction, the answer is 344/315
6. In mixed form: 129/315

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