Subtract 28/30 from 2/72
2/72 - 28/30 is -163/180.
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,
2/72 = 2 × 5/72 × 5 = 10/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
28/30 = 28 × 12/30 × 12 = 336/360 - Subtract the two like fractions:
10/360 - 336/360 = 10 - 336/360 = -326/360 - After reducing the fraction, the answer is -163/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/72-28/30 2/72-56/30 2/72-28/60 6/72-28/30 2/72-84/30 2/72-28/90 10/72-28/30 14/72-28/30