Subtract 9/8 from 30/36
1st number: 30/36, 2nd number: 1 1/8
30/36 - 9/8 is -7/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 36 × 2 = 72,
30/36 = 30 × 2/36 × 2 = 60/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
9/8 = 9 × 9/8 × 9 = 81/72 - Subtract the two like fractions:
60/72 - 81/72 = 60 - 81/72 = -21/72 - After reducing the fraction, the answer is -7/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/36-9/8 30/36-18/8 30/72-9/8 30/36-9/16 90/36-9/8 30/36-27/8 30/36-9/24 30/36-45/8 30/36-9/40 30/36-63/8 30/36-9/56