Add 1/45 and 14/21
1/45 + 14/21 is 31/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 21 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
1/45 = 1 × 7/45 × 7 = 7/315 - Likewise, for the 2nd fraction, since 21 × 15 = 315,
14/21 = 14 × 15/21 × 15 = 210/315 - Add the two like fractions:
7/315 + 210/315 = 7 + 210/315 = 217/315 - 217/315 simplified gives 31/45
- So, 1/45 + 14/21 = 31/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/45+14/21 1/45+28/21 1/90+14/21 1/45+14/42 3/45+14/21 1/45+42/21 1/45+14/63 5/45+14/21 1/45+70/21 7/45+14/21 1/45+98/21