Answers

Subtract 70/18 from 30/63

1^st number: 30/63, 2^nd number: 3 16/18

30/63 - 70/18 is -215/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 63 × 2 = 126,
   30/63 = 30 × 2/63 × 2 = 60/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   70/18 = 70 × 7/18 × 7 = 490/126
4. Subtract the two like fractions:
   60/126 - 490/126 = 60 - 490/126 = -430/126
5. After reducing the fraction, the answer is -215/63

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