Answers

Subtract 80/30 from 54/63

1^st number: 54/63, 2^nd number: 2 20/30

54/63 - 80/30 is -38/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 30 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   54/63 = 54 × 10/63 × 10 = 540/630
3. Likewise, for the 2nd fraction, since 30 × 21 = 630,
   80/30 = 80 × 21/30 × 21 = 1680/630
4. Subtract the two like fractions:
   540/630 - 1680/630 = 540 - 1680/630 = -1140/630
5. After reducing the fraction, the answer is -38/21

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