Subtract 25/27 from 15/80, Solve 15/80

Subtract 25/27 from 15/80

15/80 - 25/27 is -319/432.

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,
15/80 = 15 × 27/80 × 27 = 405/2160
Likewise, for the 2nd fraction, since 27 × 80 = 2160,
25/27 = 25 × 80/27 × 80 = 2000/2160
Subtract the two like fractions:
405/2160 - 2000/2160 = 405 - 2000/2160 = -1595/2160
After reducing the fraction, the answer is -319/432

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