Add 30/63 and 81/70
1st number: 30/63, 2nd number: 1 11/70
30/63 + 81/70 is 49/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
30/63 = 30 × 10/63 × 10 = 300/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
81/70 = 81 × 9/70 × 9 = 729/630 - Add the two like fractions:
300/630 + 729/630 = 300 + 729/630 = 1029/630 - 1029/630 simplified gives 49/30
- So, 30/63 + 81/70 = 49/30
In mixed form: 119/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/63+81/70 90/63+81/70