Answers

Subtract 80/7 from 90/63

1^st number: 1 27/63, 2^nd number: 11 3/7

90/63 - 80/7 is -10/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 7 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 63 × 1 = 63,
   90/63 = 90 × 1/63 × 1 = 90/63
3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
   80/7 = 80 × 9/7 × 9 = 720/63
4. Subtract the two like fractions:
   90/63 - 720/63 = 90 - 720/63 = -630/63
5. After reducing the fraction, the answer is -10/1

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