Answers

Subtract 70/36 from 21/15

1^st number: 1 6/15, 2^nd number: 1 34/36

21/15 - 70/36 is -49/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 36 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 15 × 12 = 180,
   21/15 = 21 × 12/15 × 12 = 252/180
3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
   70/36 = 70 × 5/36 × 5 = 350/180
4. Subtract the two like fractions:
   252/180 - 350/180 = 252 - 350/180 = -98/180
5. After reducing the fraction, the answer is -49/90

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