Subtract 7/54 from 90/80
1st number: 1 10/80, 2nd number: 7/54
90/80 - 7/54 is 215/216.
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,
90/80 = 90 × 27/80 × 27 = 2430/2160 - Likewise, for the 2nd fraction, since 54 × 40 = 2160,
7/54 = 7 × 40/54 × 40 = 280/2160 - Subtract the two like fractions:
2430/2160 - 280/2160 = 2430 - 280/2160 = 2150/2160 - After reducing the fraction, the answer is 215/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80-14/54 90/80-21/54 90/80-35/54 90/80-49/54