Subtract 2/81 from 18/80
18/80 - 2/81 is 649/3240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 81 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 80 × 81 = 6480,
18/80 = 18 × 81/80 × 81 = 1458/6480 - Likewise, for the 2nd fraction, since 81 × 80 = 6480,
2/81 = 2 × 80/81 × 80 = 160/6480 - Subtract the two like fractions:
1458/6480 - 160/6480 = 1458 - 160/6480 = 1298/6480 - After reducing the fraction, the answer is 649/3240
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