Subtract 4/30 from 25/81
25/81 - 4/30 is 71/405.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 30 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
25/81 = 25 × 10/81 × 10 = 250/810 - Likewise, for the 2nd fraction, since 30 × 27 = 810,
4/30 = 4 × 27/30 × 27 = 108/810 - Subtract the two like fractions:
250/810 - 108/810 = 250 - 108/810 = 142/810 - After reducing the fraction, the answer is 71/405
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