Subtract 90/9 from 45/16
1st number: 2 13/16, 2nd number: 10 0/9
45/16 - 90/9 is -115/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 9 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
45/16 = 45 × 9/16 × 9 = 405/144 - Likewise, for the 2nd fraction, since 9 × 16 = 144,
90/9 = 90 × 16/9 × 16 = 1440/144 - Subtract the two like fractions:
405/144 - 1440/144 = 405 - 1440/144 = -1035/144 - After reducing the fraction, the answer is -115/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/16-90/9 45/32-90/9 45/16-90/18 45/48-90/9 45/16-90/27 45/80-90/9 45/16-90/45 45/16-90/63