Subtract 1/18 from 90/16
1st number: 5 10/16, 2nd number: 1/18
90/16 - 1/18 is 401/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 18 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
90/16 = 90 × 9/16 × 9 = 810/144 - Likewise, for the 2nd fraction, since 18 × 8 = 144,
1/18 = 1 × 8/18 × 8 = 8/144 - Subtract the two like fractions:
810/144 - 8/144 = 810 - 8/144 = 802/144 - After reducing the fraction, the answer is 401/72
- In mixed form: 541/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/16-2/18 90/32-1/18 90/16-1/36 90/16-3/18 90/48-1/18 90/16-1/54 90/16-5/18 90/80-1/18 90/16-1/90 90/16-7/18