Add 5/30 and 4/21
5/30 + 4/21 is 5/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
5/30 = 5 × 7/30 × 7 = 35/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
4/21 = 4 × 10/21 × 10 = 40/210 - Add the two like fractions:
35/210 + 40/210 = 35 + 40/210 = 75/210 - 75/210 simplified gives 5/14
- So, 5/30 + 4/21 = 5/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/30+4/21 5/30+8/21 5/60+4/21 5/30+4/42 15/30+4/21 5/30+12/21 5/90+4/21 5/30+4/63 25/30+4/21 5/30+20/21 35/30+4/21 5/30+28/21