Add 21/45 and 63/10
1st number: 21/45, 2nd number: 6 3/10
21/45 + 63/10 is 203/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
63/10 = 63 × 9/10 × 9 = 567/90 - Add the two like fractions:
42/90 + 567/90 = 42 + 567/90 = 609/90 - 609/90 simplified gives 203/30
- So, 21/45 + 63/10 = 203/30
In mixed form: 623/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45+63/10 21/90+63/10 21/45+63/20 63/45+63/10 21/45+63/30 21/45+63/50 21/45+63/70