Answers

Subtract 4/81 from 7/10

7/10 - 4/81 is 527/810.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 10 × 81 = 810,
   7/10 = 7 × 81/10 × 81 = 567/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   4/81 = 4 × 10/81 × 10 = 40/810
4. Subtract the two like fractions:
   567/810 - 40/810 = 567 - 40/810 = 527/810

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