Answers

Subtract 90/45 from 60/63

1^st number: 60/63, 2^nd number: 2 0/45

60/63 - 90/45 is -22/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 45 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 63 × 5 = 315,
   60/63 = 60 × 5/63 × 5 = 300/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   90/45 = 90 × 7/45 × 7 = 630/315
4. Subtract the two like fractions:
   300/315 - 630/315 = 300 - 630/315 = -330/315
5. After reducing the fraction, the answer is -22/21

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