Subtract 75/54 from 49/80, Solve 49/80

Subtract 75/54 from 49/80

1^st number: 49/80, 2^nd number: 1 21/54

49/80 - 75/54 is -559/720.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 54 is 2160

Next, find the equivalent fraction of both fractional numbers with denominator 2160
For the 1st fraction, since 80 × 27 = 2160,
49/80 = 49 × 27/80 × 27 = 1323/2160
Likewise, for the 2nd fraction, since 54 × 40 = 2160,
75/54 = 75 × 40/54 × 40 = 3000/2160
Subtract the two like fractions:
1323/2160 - 3000/2160 = 1323 - 3000/2160 = -1677/2160
After reducing the fraction, the answer is -559/720

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