Subtract 7/10 from 15/27
15/27 - 7/10 is -13/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 10 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
15/27 = 15 × 10/27 × 10 = 150/270 - Likewise, for the 2nd fraction, since 10 × 27 = 270,
7/10 = 7 × 27/10 × 27 = 189/270 - Subtract the two like fractions:
150/270 - 189/270 = 150 - 189/270 = -39/270 - After reducing the fraction, the answer is -13/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/27-7/10 15/27-14/10 15/54-7/10 15/27-7/20 45/27-7/10 15/27-21/10 15/81-7/10 15/27-7/30 75/27-7/10 15/27-35/10 15/27-7/50 15/27-49/10 15/27-7/70