Answers

Subtract 70/63 from 15/30

1^st number: 15/30, 2^nd number: 1 7/63

15/30 - 70/63 is -11/18.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 30 × 21 = 630,
   15/30 = 15 × 21/30 × 21 = 315/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   70/63 = 70 × 10/63 × 10 = 700/630
4. Subtract the two like fractions:
   315/630 - 700/630 = 315 - 700/630 = -385/630
5. After reducing the fraction, the answer is -11/18

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