Subtract 14/42 from 1/40
1/40 - 14/42 is -37/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
1/40 = 1 × 21/40 × 21 = 21/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
14/42 = 14 × 20/42 × 20 = 280/840 - Subtract the two like fractions:
21/840 - 280/840 = 21 - 280/840 = -259/840 - After reducing the fraction, the answer is -37/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/40-14/42 1/40-28/42 1/80-14/42 1/40-14/84 3/40-14/42 5/40-14/42 1/40-70/42 7/40-14/42 1/40-98/42