Subtract 72/16 from 1/9
1st number: 1/9, 2nd number: 4 8/16
1/9 - 72/16 is -79/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 9 × 16 = 144,
1/9 = 1 × 16/9 × 16 = 16/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
72/16 = 72 × 9/16 × 9 = 648/144 - Subtract the two like fractions:
16/144 - 648/144 = 16 - 648/144 = -632/144 - After reducing the fraction, the answer is -79/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/9-72/16 1/18-72/16 1/9-72/32 3/9-72/16 1/27-72/16 1/9-72/48 5/9-72/16 1/45-72/16 1/9-72/80 7/9-72/16 1/63-72/16