Subtract 21/45 from 14/35
14/35 - 21/45 is -1/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 35 × 9 = 315,
14/35 = 14 × 9/35 × 9 = 126/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
21/45 = 21 × 7/45 × 7 = 147/315 - Subtract the two like fractions:
126/315 - 147/315 = 126 - 147/315 = -21/315 - After reducing the fraction, the answer is -1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/35-21/45 14/35-42/45 14/70-21/45 14/35-21/90 42/35-21/45 14/35-63/45 70/35-21/45 98/35-21/45