Subtract 3/81 from 2/80
2/80 - 3/81 is -13/1080.
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,
2/80 = 2 × 81/80 × 81 = 162/6480 - Likewise, for the 2nd fraction, since 81 × 80 = 6480,
3/81 = 3 × 80/81 × 80 = 240/6480 - Subtract the two like fractions:
162/6480 - 240/6480 = 162 - 240/6480 = -78/6480 - After reducing the fraction, the answer is -13/1080
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