Add 30/63 and 63/90
30/63 + 63/90 is 247/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 90 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 90 × 7 = 630,
63/90 = 63 × 7/90 × 7 = 441/630 - Add the two like fractions:
300/630 + 441/630 = 300 + 441/630 = 741/630 - 741/630 simplified gives 247/210
- So, 30/63 + 63/90 = 247/210
In mixed form: 137/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/63+63/90 90/63+63/90