Answers

Subtract 27/72 from 28/70

28/70 - 27/72 is 1/40.

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,
   28/70 = 28 × 36/70 × 36 = 1008/2520
3. Likewise, for the 2nd fraction, since 72 × 35 = 2520,
   27/72 = 27 × 35/72 × 35 = 945/2520
4. Subtract the two like fractions:
   1008/2520 - 945/2520 = 1008 - 945/2520 = 63/2520
5. After reducing the fraction, the answer is 1/40

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