Subtract 15/27 from 8/30
8/30 - 15/27 is -13/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
8/30 = 8 × 9/30 × 9 = 72/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
15/27 = 15 × 10/27 × 10 = 150/270 - Subtract the two like fractions:
72/270 - 150/270 = 72 - 150/270 = -78/270 - After reducing the fraction, the answer is -13/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/30-15/27 8/30-30/27 8/60-15/27 8/30-15/54 24/30-15/27 8/30-45/27 8/90-15/27 8/30-15/81 40/30-15/27 8/30-75/27 56/30-15/27