Subtract 8/72 from 2/30
2/30 - 8/72 is -2/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 30 × 12 = 360,
2/30 = 2 × 12/30 × 12 = 24/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
8/72 = 8 × 5/72 × 5 = 40/360 - Subtract the two like fractions:
24/360 - 40/360 = 24 - 40/360 = -16/360 - After reducing the fraction, the answer is -2/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/30-8/72 2/30-16/72 2/60-8/72 6/30-8/72 2/30-24/72 2/90-8/72 10/30-8/72 2/30-40/72 14/30-8/72 2/30-56/72