Subtract 7/10 from 3/18
3/18 - 7/10 is -8/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
3/18 = 3 × 5/18 × 5 = 15/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
7/10 = 7 × 9/10 × 9 = 63/90 - Subtract the two like fractions:
15/90 - 63/90 = 15 - 63/90 = -48/90 - After reducing the fraction, the answer is -8/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18-7/10 3/18-14/10 3/36-7/10 3/18-7/20 9/18-7/10 3/18-21/10 3/54-7/10 3/18-7/30 15/18-7/10 3/18-35/10 3/90-7/10 3/18-7/50 21/18-7/10 3/18-49/10 3/18-7/70