Answers

Subtract 63/7 from 90/15

1^st number: 6 0/15, 2^nd number: 9 0/7

90/15 - 63/7 is -3/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 7 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 15 × 7 = 105,
   90/15 = 90 × 7/15 × 7 = 630/105
3. Likewise, for the 2nd fraction, since 7 × 15 = 105,
   63/7 = 63 × 15/7 × 15 = 945/105
4. Subtract the two like fractions:
   630/105 - 945/105 = 630 - 945/105 = -315/105
5. After reducing the fraction, the answer is -3/1

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