Add 6/30 and 9/21
6/30 + 9/21 is 22/35.
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,
6/30 = 6 × 7/30 × 7 = 42/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
9/21 = 9 × 10/21 × 10 = 90/210 - Add the two like fractions:
42/210 + 90/210 = 42 + 90/210 = 132/210 - 132/210 simplified gives 22/35
- So, 6/30 + 9/21 = 22/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/30+9/21 6/30+18/21 6/60+9/21 6/30+9/42 18/30+9/21 6/30+27/21 6/90+9/21 6/30+9/63 6/30+45/21 42/30+9/21 6/30+63/21