Subtract 16/27 from 15/40, Solve 15/40

Subtract 16/27 from 15/40

15/40 - 16/27 is -47/216.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080

Next, find the equivalent fraction of both fractional numbers with denominator 1080
For the 1st fraction, since 40 × 27 = 1080,
15/40 = 15 × 27/40 × 27 = 405/1080
Likewise, for the 2nd fraction, since 27 × 40 = 1080,
16/27 = 16 × 40/27 × 40 = 640/1080
Subtract the two like fractions:
405/1080 - 640/1080 = 405 - 640/1080 = -235/1080
After reducing the fraction, the answer is -47/216

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