Add 2/21 and 6/45
2/21 + 6/45 is 8/35.
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,
2/21 = 2 × 15/21 × 15 = 30/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
6/45 = 6 × 7/45 × 7 = 42/315 - Add the two like fractions:
30/315 + 42/315 = 30 + 42/315 = 72/315 - 72/315 simplified gives 8/35
- So, 2/21 + 6/45 = 8/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+6/45 2/21+12/45 2/42+6/45 2/21+6/90 6/21+6/45 2/21+18/45 2/63+6/45 10/21+6/45 2/21+30/45 14/21+6/45 2/21+42/45