Add 6/9 and 40/70
6/9 + 40/70 is 26/21.
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,
6/9 = 6 × 70/9 × 70 = 420/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
40/70 = 40 × 9/70 × 9 = 360/630 - Add the two like fractions:
420/630 + 360/630 = 420 + 360/630 = 780/630 - 780/630 simplified gives 26/21
- So, 6/9 + 40/70 = 26/21
In mixed form: 15/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/9+40/70 6/9+80/70 6/18+40/70 18/9+40/70 6/27+40/70 30/9+40/70 6/45+40/70 42/9+40/70 6/63+40/70