Add 10/21 and 14/70
10/21 + 14/70 is 71/105.
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,
10/21 = 10 × 10/21 × 10 = 100/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
14/70 = 14 × 3/70 × 3 = 42/210 - Add the two like fractions:
100/210 + 42/210 = 100 + 42/210 = 142/210 - 142/210 simplified gives 71/105
- So, 10/21 + 14/70 = 71/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21+14/70 10/21+28/70 10/42+14/70 30/21+14/70 10/21+42/70 10/63+14/70 50/21+14/70 70/21+14/70 10/21+98/70