Add 4/30 and 21/35
4/30 + 21/35 is 11/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
4/30 = 4 × 7/30 × 7 = 28/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
21/35 = 21 × 6/35 × 6 = 126/210 - Add the two like fractions:
28/210 + 126/210 = 28 + 126/210 = 154/210 - 154/210 simplified gives 11/15
- So, 4/30 + 21/35 = 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30+21/35 4/30+42/35 4/60+21/35 4/30+21/70 12/30+21/35 4/30+63/35 4/90+21/35 20/30+21/35 28/30+21/35