Subtract 70/30 from 10/72
1st number: 10/72, 2nd number: 2 10/30
10/72 - 70/30 is -79/36.
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,
10/72 = 10 × 5/72 × 5 = 50/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
70/30 = 70 × 12/30 × 12 = 840/360 - Subtract the two like fractions:
50/360 - 840/360 = 50 - 840/360 = -790/360 - After reducing the fraction, the answer is -79/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/72-70/30 10/72-70/60 30/72-70/30 10/72-70/90 50/72-70/30 70/72-70/30