Subtract 4/14 from 21/45
21/45 - 4/14 is 19/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 14 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
21/45 = 21 × 14/45 × 14 = 294/630 - Likewise, for the 2nd fraction, since 14 × 45 = 630,
4/14 = 4 × 45/14 × 45 = 180/630 - Subtract the two like fractions:
294/630 - 180/630 = 294 - 180/630 = 114/630 - After reducing the fraction, the answer is 19/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45-4/14 21/45-8/14 21/90-4/14 21/45-4/28 63/45-4/14 21/45-12/14 21/45-4/42 21/45-20/14 21/45-4/70 21/45-28/14 21/45-4/98