Answers

Subtract 70/72 from 40/28

1^st number: 1 12/28, 2^nd number: 70/72

40/28 - 70/72 is 115/252.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 28 × 18 = 504,
   40/28 = 40 × 18/28 × 18 = 720/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   70/72 = 70 × 7/72 × 7 = 490/504
4. Subtract the two like fractions:
   720/504 - 490/504 = 720 - 490/504 = 230/504
5. After reducing the fraction, the answer is 115/252

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