Add 6/63 and 21/90
6/63 + 21/90 is 23/70.
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,
6/63 = 6 × 10/63 × 10 = 60/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
21/90 = 21 × 7/90 × 7 = 147/630 - Add the two like fractions:
60/630 + 147/630 = 60 + 147/630 = 207/630 - 207/630 simplified gives 23/70
- So, 6/63 + 21/90 = 23/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/63+21/90 6/63+42/90 18/63+21/90 6/63+63/90 30/63+21/90 42/63+21/90