Subtract 27/18 from 7/10
1st number: 7/10, 2nd number: 1 9/18
7/10 - 27/18 is -4/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
7/10 = 7 × 9/10 × 9 = 63/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
27/18 = 27 × 5/18 × 5 = 135/90 - Subtract the two like fractions:
63/90 - 135/90 = 63 - 135/90 = -72/90 - After reducing the fraction, the answer is -4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/10-27/18 7/10-54/18 7/20-27/18 7/10-27/36 21/10-27/18 7/10-81/18 7/30-27/18 7/10-27/54 35/10-27/18 7/50-27/18 7/10-27/90 49/10-27/18 7/70-27/18