Subtract 27/30 from 5/40
5/40 - 27/30 is -31/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
5/40 = 5 × 3/40 × 3 = 15/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
27/30 = 27 × 4/30 × 4 = 108/120 - Subtract the two like fractions:
15/120 - 108/120 = 15 - 108/120 = -93/120 - After reducing the fraction, the answer is -31/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/40-27/30 5/40-54/30 5/80-27/30 5/40-27/60 15/40-27/30 5/40-81/30 5/40-27/90 25/40-27/30 35/40-27/30