Subtract 2/27 from 20/80, Solve 20/80

Subtract 2/27 from 20/80

20/80 - 2/27 is 19/108.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 27 is 2160

Next, find the equivalent fraction of both fractional numbers with denominator 2160
For the 1st fraction, since 80 × 27 = 2160,
20/80 = 20 × 27/80 × 27 = 540/2160
Likewise, for the 2nd fraction, since 27 × 80 = 2160,
2/27 = 2 × 80/27 × 80 = 160/2160
Subtract the two like fractions:
540/2160 - 160/2160 = 540 - 160/2160 = 380/2160
After reducing the fraction, the answer is 19/108

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