Add 30/9 and 50/70
1st number: 3 3/9, 2nd number: 50/70
30/9 + 50/70 is 85/21.
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,
30/9 = 30 × 70/9 × 70 = 2100/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
50/70 = 50 × 9/70 × 9 = 450/630 - Add the two like fractions:
2100/630 + 450/630 = 2100 + 450/630 = 2550/630 - 2550/630 simplified gives 85/21
- So, 30/9 + 50/70 = 85/21
In mixed form: 41/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/9+50/70 30/18+50/70 90/9+50/70 30/27+50/70 30/45+50/70 30/63+50/70