Subtract 14/30 from 9/40
9/40 - 14/30 is -29/120.
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,
9/40 = 9 × 3/40 × 3 = 27/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
14/30 = 14 × 4/30 × 4 = 56/120 - Subtract the two like fractions:
27/120 - 56/120 = 27 - 56/120 = -29/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40-14/30 9/40-28/30 9/80-14/30 9/40-14/60 27/40-14/30 9/40-42/30 9/40-14/90 45/40-14/30 9/40-70/30 63/40-14/30 9/40-98/30