Add 3/9 and 10/70
3/9 + 10/70 is 10/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
3/9 = 3 × 70/9 × 70 = 210/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
10/70 = 10 × 9/70 × 9 = 90/630 - Add the two like fractions:
210/630 + 90/630 = 210 + 90/630 = 300/630 - 300/630 simplified gives 10/21
- So, 3/9 + 10/70 = 10/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/9+10/70 3/9+20/70 3/18+10/70 3/9+30/70 3/27+10/70 15/9+10/70 3/9+50/70 3/45+10/70 21/9+10/70 3/63+10/70