Subtract 49/27 from 15/20, Solve 15/20

Subtract 49/27 from 15/20

1^st number: 15/20, 2^nd number: 1 22/27

15/20 - 49/27 is -115/108.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540

Next, find the equivalent fraction of both fractional numbers with denominator 540
For the 1st fraction, since 20 × 27 = 540,
15/20 = 15 × 27/20 × 27 = 405/540
Likewise, for the 2nd fraction, since 27 × 20 = 540,
49/27 = 49 × 20/27 × 20 = 980/540
Subtract the two like fractions:
405/540 - 980/540 = 405 - 980/540 = -575/540
After reducing the fraction, the answer is -115/108

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