Subtract 10/30 from 3/72
3/72 - 10/30 is -7/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
3/72 = 3 × 5/72 × 5 = 15/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
10/30 = 10 × 12/30 × 12 = 120/360 - Subtract the two like fractions:
15/360 - 120/360 = 15 - 120/360 = -105/360 - 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: 6/72-10/30 3/72-20/30 3/72-10/60 9/72-10/30 3/72-10/90 15/72-10/30 3/72-50/30 21/72-10/30 3/72-70/30