Subtract 9/16 from 9/45
9/45 - 9/16 is -29/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
9/45 = 9 × 16/45 × 16 = 144/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
9/16 = 9 × 45/16 × 45 = 405/720 - Subtract the two like fractions:
144/720 - 405/720 = 144 - 405/720 = -261/720 - After reducing the fraction, the answer is -29/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/45-9/16 9/45-18/16 9/90-9/16 9/45-9/32 27/45-9/16 9/45-27/16 9/45-9/48 9/45-45/16 9/45-9/80 63/45-9/16 9/45-63/16