Answers

Subtract 49/42 from 1/63

1^st number: 1/63, 2^nd number: 1 7/42

1/63 - 49/42 is -145/126.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 42 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 63 × 2 = 126,
   1/63 = 1 × 2/63 × 2 = 2/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   49/42 = 49 × 3/42 × 3 = 147/126
4. Subtract the two like fractions:
   2/126 - 147/126 = 2 - 147/126 = -145/126

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