Add 14/21 and 8/30
14/21 + 8/30 is 14/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
14/21 = 14 × 10/21 × 10 = 140/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
8/30 = 8 × 7/30 × 7 = 56/210 - Add the two like fractions:
140/210 + 56/210 = 140 + 56/210 = 196/210 - 196/210 simplified gives 14/15
- So, 14/21 + 8/30 = 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21+8/30 14/21+16/30 14/42+8/30 14/21+8/60 42/21+8/30 14/21+24/30 14/63+8/30 14/21+8/90 70/21+8/30 14/21+40/30 98/21+8/30 14/21+56/30