Answers

Subtract 30/72 from 72/70

1^st number: 1 2/70, 2^nd number: 30/72

72/70 - 30/72 is 257/420.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 72 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 70 × 36 = 2520,
   72/70 = 72 × 36/70 × 36 = 2592/2520
3. Likewise, for the 2nd fraction, since 72 × 35 = 2520,
   30/72 = 30 × 35/72 × 35 = 1050/2520
4. Subtract the two like fractions:
   2592/2520 - 1050/2520 = 2592 - 1050/2520 = 1542/2520
5. After reducing the fraction, the answer is 257/420

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