Answers

Subtract 30/80 from 35/81

35/81 - 30/80 is 37/648.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 80 is 6480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 6480
2. For the 1st fraction, since 81 × 80 = 6480,
   35/81 = 35 × 80/81 × 80 = 2800/6480
3. Likewise, for the 2nd fraction, since 80 × 81 = 6480,
   30/80 = 30 × 81/80 × 81 = 2430/6480
4. Subtract the two like fractions:
   2800/6480 - 2430/6480 = 2800 - 2430/6480 = 370/6480
5. After reducing the fraction, the answer is 37/648

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