Subtract 1/54 from 42/80, Solve 42/80

Subtract 1/54 from 42/80

42/80 - 1/54 is 547/1080.

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,
42/80 = 42 × 27/80 × 27 = 1134/2160
Likewise, for the 2nd fraction, since 54 × 40 = 2160,
1/54 = 1 × 40/54 × 40 = 40/2160
Subtract the two like fractions:
1134/2160 - 40/2160 = 1134 - 40/2160 = 1094/2160
After reducing the fraction, the answer is 547/1080

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