Subtract 30/8 from 5/9
1st number: 5/9, 2nd number: 3 6/8
5/9 - 30/8 is -115/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
5/9 = 5 × 8/9 × 8 = 40/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
30/8 = 30 × 9/8 × 9 = 270/72 - Subtract the two like fractions:
40/72 - 270/72 = 40 - 270/72 = -230/72 - After reducing the fraction, the answer is -115/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/9-30/8 5/9-60/8 5/18-30/8 5/9-30/16 15/9-30/8 5/9-90/8 5/27-30/8 5/9-30/24 25/9-30/8 5/45-30/8 5/9-30/40 35/9-30/8 5/63-30/8 5/9-30/56