Add 49/21 and 9/90
1st number: 2 7/21, 2nd number: 9/90
49/21 + 9/90 is 73/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
49/21 = 49 × 30/21 × 30 = 1470/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
9/90 = 9 × 7/90 × 7 = 63/630 - Add the two like fractions:
1470/630 + 63/630 = 1470 + 63/630 = 1533/630 - 1533/630 simplified gives 73/30
- So, 49/21 + 9/90 = 73/30
In mixed form: 213/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21+9/90 49/21+18/90 49/42+9/90 49/21+27/90 49/63+9/90 49/21+45/90 49/21+63/90