Add 7/9 and 42/70
7/9 + 42/70 is 62/45.
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,
7/9 = 7 × 70/9 × 70 = 490/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
42/70 = 42 × 9/70 × 9 = 378/630 - Add the two like fractions:
490/630 + 378/630 = 490 + 378/630 = 868/630 - 868/630 simplified gives 62/45
- So, 7/9 + 42/70 = 62/45
In mixed form: 117/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/9+42/70 7/9+84/70 7/18+42/70 21/9+42/70 7/27+42/70 35/9+42/70 7/45+42/70 49/9+42/70 7/63+42/70