Subtract 1/40 from 2/30
2/30 - 1/40 is 1/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
2/30 = 2 × 4/30 × 4 = 8/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
1/40 = 1 × 3/40 × 3 = 3/120 - Subtract the two like fractions:
8/120 - 3/120 = 8 - 3/120 = 5/120 - After reducing the fraction, the answer is 1/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/30-1/40 2/30-2/40 2/60-1/40 2/30-1/80 6/30-1/40 2/30-3/40 2/90-1/40 10/30-1/40 2/30-5/40 14/30-1/40 2/30-7/40