Subtract 18/72 from 2/10
2/10 - 18/72 is -1/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 10 × 36 = 360,
2/10 = 2 × 36/10 × 36 = 72/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
18/72 = 18 × 5/72 × 5 = 90/360 - Subtract the two like fractions:
72/360 - 90/360 = 72 - 90/360 = -18/360 - After reducing the fraction, the answer is -1/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/10-18/72 2/10-36/72 2/20-18/72 6/10-18/72 2/10-54/72 2/30-18/72 2/10-90/72 2/50-18/72 14/10-18/72 2/70-18/72