Add 14/21 and 15/45
14/21 + 15/45 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
14/21 = 14 × 15/21 × 15 = 210/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
15/45 = 15 × 7/45 × 7 = 105/315 - Add the two like fractions:
210/315 + 105/315 = 210 + 105/315 = 315/315 - 315/315 simplified gives 1/1
- So, 14/21 + 15/45 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21+15/45 14/21+30/45 14/42+15/45 14/21+15/90 42/21+15/45 14/63+15/45 70/21+15/45 14/21+75/45 98/21+15/45