Answers

Subtract 49/10 from 18/63

1^st number: 18/63, 2^nd number: 4 9/10

18/63 - 49/10 is -323/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 10 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   18/63 = 18 × 10/63 × 10 = 180/630
3. Likewise, for the 2nd fraction, since 10 × 63 = 630,
   49/10 = 49 × 63/10 × 63 = 3087/630
4. Subtract the two like fractions:
   180/630 - 3087/630 = 180 - 3087/630 = -2907/630
5. After reducing the fraction, the answer is -323/70

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