Add 15/70 and 7/9
15/70 + 7/9 is 125/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
15/70 = 15 × 9/70 × 9 = 135/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
7/9 = 7 × 70/9 × 70 = 490/630 - Add the two like fractions:
135/630 + 490/630 = 135 + 490/630 = 625/630 - 625/630 simplified gives 125/126
- So, 15/70 + 7/9 = 125/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70+7/9 15/70+14/9 15/70+7/18 45/70+7/9 15/70+21/9 15/70+7/27 75/70+7/9 15/70+35/9 15/70+7/45 15/70+49/9 15/70+7/63