Answers

Subtract 70/49 from 45/63

1^st number: 45/63, 2^nd number: 1 21/49

45/63 - 70/49 is -5/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 49 is 441
   
   Next, find the equivalent fraction of both fractional numbers with denominator 441
2. For the 1st fraction, since 63 × 7 = 441,
   45/63 = 45 × 7/63 × 7 = 315/441
3. Likewise, for the 2nd fraction, since 49 × 9 = 441,
   70/49 = 70 × 9/49 × 9 = 630/441
4. Subtract the two like fractions:
   315/441 - 630/441 = 315 - 630/441 = -315/441
5. After reducing the fraction, the answer is -5/7

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