Subtract 2/30 from 5/40
5/40 - 2/30 is 7/120.
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,
2/30 = 2 × 4/30 × 4 = 8/120 - Subtract the two like fractions:
15/120 - 8/120 = 15 - 8/120 = 7/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/40-2/30 5/40-4/30 5/80-2/30 5/40-2/60 15/40-2/30 5/40-6/30 5/40-2/90 25/40-2/30 5/40-10/30 35/40-2/30 5/40-14/30