Subtract 18/90 from 2/16
2/16 - 18/90 is -3/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
2/16 = 2 × 45/16 × 45 = 90/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
18/90 = 18 × 8/90 × 8 = 144/720 - Subtract the two like fractions:
90/720 - 144/720 = 90 - 144/720 = -54/720 - After reducing the fraction, the answer is -3/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/16-18/90 2/16-36/90 2/32-18/90 6/16-18/90 2/16-54/90 2/48-18/90 10/16-18/90 2/80-18/90 14/16-18/90