Subtract 4/80 from 56/54, Solve 1 2/54

Subtract 4/80 from 56/54

1^st number: 1 2/54, 2^nd number: 4/80

56/54 - 4/80 is 533/540.

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

Next, find the equivalent fraction of both fractional numbers with denominator 2160
For the 1st fraction, since 54 × 40 = 2160,
56/54 = 56 × 40/54 × 40 = 2240/2160
Likewise, for the 2nd fraction, since 80 × 27 = 2160,
4/80 = 4 × 27/80 × 27 = 108/2160
Subtract the two like fractions:
2240/2160 - 108/2160 = 2240 - 108/2160 = 2132/2160
After reducing the fraction, the answer is 533/540

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