Subtract 16/54 from 42/80
42/80 - 16/54 is 247/1080.
Steps for subtracting fractions
- 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,
16/54 = 16 × 40/54 × 40 = 640/2160 - Subtract the two like fractions:
1134/2160 - 640/2160 = 1134 - 640/2160 = 494/2160 - After reducing the fraction, the answer is 247/1080
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80-16/54 42/80-32/54 42/80-48/54 42/80-80/54