Add 8/9 and 42/70
8/9 + 42/70 is 67/45.
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,
8/9 = 8 × 70/9 × 70 = 560/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
42/70 = 42 × 9/70 × 9 = 378/630 - Add the two like fractions:
560/630 + 378/630 = 560 + 378/630 = 938/630 - 938/630 simplified gives 67/45
- So, 8/9 + 42/70 = 67/45
In mixed form: 122/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/9+42/70 8/9+84/70 8/18+42/70 24/9+42/70 8/27+42/70 40/9+42/70 8/45+42/70 56/9+42/70 8/63+42/70