Subtract 20/27 from 12/80, Solve 12/80

Subtract 20/27 from 12/80

12/80 - 20/27 is -319/540.

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,
12/80 = 12 × 27/80 × 27 = 324/2160
Likewise, for the 2nd fraction, since 27 × 80 = 2160,
20/27 = 20 × 80/27 × 80 = 1600/2160
Subtract the two like fractions:
324/2160 - 1600/2160 = 324 - 1600/2160 = -1276/2160
After reducing the fraction, the answer is -319/540

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