Answers

Subtract 72/63 from 2/18

1^st number: 2/18, 2^nd number: 1 9/63

2/18 - 72/63 is -65/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 63 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   2/18 = 2 × 7/18 × 7 = 14/126
3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
   72/63 = 72 × 2/63 × 2 = 144/126
4. Subtract the two like fractions:
   14/126 - 144/126 = 14 - 144/126 = -130/126
5. After reducing the fraction, the answer is -65/63

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