Subtract 21/35 from 14/45
14/45 - 21/35 is -13/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 35 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
14/45 = 14 × 7/45 × 7 = 98/315 - Likewise, for the 2nd fraction, since 35 × 9 = 315,
21/35 = 21 × 9/35 × 9 = 189/315 - Subtract the two like fractions:
98/315 - 189/315 = 98 - 189/315 = -91/315 - After reducing the fraction, the answer is -13/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/45-21/35 14/45-42/35 14/90-21/35 14/45-21/70 42/45-21/35 14/45-63/35 70/45-21/35 98/45-21/35