Add 7/21 and 2/70
7/21 + 2/70 is 38/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
7/21 = 7 × 10/21 × 10 = 70/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
2/70 = 2 × 3/70 × 3 = 6/210 - Add the two like fractions:
70/210 + 6/210 = 70 + 6/210 = 76/210 - 76/210 simplified gives 38/105
- So, 7/21 + 2/70 = 38/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21+2/70 7/21+4/70 7/42+2/70 7/21+6/70 7/63+2/70 35/21+2/70 7/21+10/70 49/21+2/70 7/21+14/70