Add 7/30 and 35/70
7/30 + 35/70 is 11/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
7/30 = 7 × 7/30 × 7 = 49/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
35/70 = 35 × 3/70 × 3 = 105/210 - Add the two like fractions:
49/210 + 105/210 = 49 + 105/210 = 154/210 - 154/210 simplified gives 11/15
- So, 7/30 + 35/70 = 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30+35/70 7/60+35/70 21/30+35/70 7/90+35/70 35/30+35/70 49/30+35/70