Answers

Subtract 42/63 from 90/5

1^st number: 18 0/5, 2^nd number: 42/63

90/5 - 42/63 is 52/3.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 63 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 5 × 63 = 315,
   90/5 = 90 × 63/5 × 63 = 5670/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   42/63 = 42 × 5/63 × 5 = 210/315
4. Subtract the two like fractions:
   5670/315 - 210/315 = 5670 - 210/315 = 5460/315
5. After reducing the fraction, the answer is 52/3
6. In mixed form: 171/3

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