Subtract 30/72 from 3/8
3/8 - 30/72 is -1/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
3/8 = 3 × 9/8 × 9 = 27/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
30/72 = 30 × 1/72 × 1 = 30/72 - Subtract the two like fractions:
27/72 - 30/72 = 27 - 30/72 = -3/72 - After reducing the fraction, the answer is -1/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/8-30/72 3/8-60/72 3/16-30/72 9/8-30/72 3/8-90/72 3/24-30/72 15/8-30/72 3/40-30/72 21/8-30/72 3/56-30/72