Add 70/21 and 24/9
1st number: 3 7/21, 2nd number: 2 6/9
70/21 + 24/9 is 6/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
70/21 = 70 × 3/21 × 3 = 210/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
24/9 = 24 × 7/9 × 7 = 168/63 - Add the two like fractions:
210/63 + 168/63 = 210 + 168/63 = 378/63 - 378/63 simplified gives 6/1
- So, 70/21 + 24/9 = 6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+48/9 70/42+24/9 70/21+24/18 70/21+72/9 70/63+24/9 70/21+24/27 70/21+24/45 70/21+24/63