Subtract 4/81 from 30/60
30/60 - 4/81 is 73/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 60 × 27 = 1620,
30/60 = 30 × 27/60 × 27 = 810/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
4/81 = 4 × 20/81 × 20 = 80/1620 - Subtract the two like fractions:
810/1620 - 80/1620 = 810 - 80/1620 = 730/1620 - After reducing the fraction, the answer is 73/162
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