Answers

Subtract 20/90 from 75/63

1^st number: 1 12/63, 2^nd number: 20/90

75/63 - 20/90 is 61/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   75/63 = 75 × 10/63 × 10 = 750/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   20/90 = 20 × 7/90 × 7 = 140/630
4. Subtract the two like fractions:
   750/630 - 140/630 = 750 - 140/630 = 610/630
5. After reducing the fraction, the answer is 61/63

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