Subtract 45/80 from 35/81
35/81 - 45/80 is -169/1296.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 80 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 81 × 80 = 6480,
35/81 = 35 × 80/81 × 80 = 2800/6480 - Likewise, for the 2nd fraction, since 80 × 81 = 6480,
45/80 = 45 × 81/80 × 81 = 3645/6480 - Subtract the two like fractions:
2800/6480 - 3645/6480 = 2800 - 3645/6480 = -845/6480 - After reducing the fraction, the answer is -169/1296
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