Subtract 35/40 from 14/21
14/21 - 35/40 is -5/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
14/21 = 14 × 40/21 × 40 = 560/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
35/40 = 35 × 21/40 × 21 = 735/840 - Subtract the two like fractions:
560/840 - 735/840 = 560 - 735/840 = -175/840 - After reducing the fraction, the answer is -5/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21-35/40 14/21-70/40 14/42-35/40 14/21-35/80 42/21-35/40 14/63-35/40 70/21-35/40 98/21-35/40