Answers

Subtract 30/28 from 72/40

1^st number: 1 32/40, 2^nd number: 1 2/28

72/40 - 30/28 is 51/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 28 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   72/40 = 72 × 7/40 × 7 = 504/280
3. Likewise, for the 2nd fraction, since 28 × 10 = 280,
   30/28 = 30 × 10/28 × 10 = 300/280
4. Subtract the two like fractions:
   504/280 - 300/280 = 504 - 300/280 = 204/280
5. After reducing the fraction, the answer is 51/70

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