Answers

Subtract 70/72 from 20/15

1^st number: 1 5/15, 2^nd number: 70/72

20/15 - 70/72 is 13/36.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 15 × 24 = 360,
   20/15 = 20 × 24/15 × 24 = 480/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   70/72 = 70 × 5/72 × 5 = 350/360
4. Subtract the two like fractions:
   480/360 - 350/360 = 480 - 350/360 = 130/360
5. After reducing the fraction, the answer is 13/36

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