Answers

Subtract 80/63 from 42/35

1^st number: 1 7/35, 2^nd number: 1 17/63

42/35 - 80/63 is -22/315.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 63 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 35 × 9 = 315,
   42/35 = 42 × 9/35 × 9 = 378/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   80/63 = 80 × 5/63 × 5 = 400/315
4. Subtract the two like fractions:
   378/315 - 400/315 = 378 - 400/315 = -22/315

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