Answers

Subtract 7/45 from 90/63

1^st number: 1 27/63, 2^nd number: 7/45

90/63 - 7/45 is 401/315.

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,
   90/63 = 90 × 5/63 × 5 = 450/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   7/45 = 7 × 7/45 × 7 = 49/315
4. Subtract the two like fractions:
   450/315 - 49/315 = 450 - 49/315 = 401/315
5. In mixed form: 186/315

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