Add 28/7 and 9/90
1st number: 4 0/7, 2nd number: 9/90
28/7 + 9/90 is 41/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
28/7 = 28 × 90/7 × 90 = 2520/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
9/90 = 9 × 7/90 × 7 = 63/630 - Add the two like fractions:
2520/630 + 63/630 = 2520 + 63/630 = 2583/630 - 2583/630 simplified gives 41/10
- So, 28/7 + 9/90 = 41/10
In mixed form: 41/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7+9/90 28/7+18/90 28/14+9/90 84/7+9/90 28/7+27/90 28/21+9/90 28/7+45/90 28/35+9/90 28/7+63/90 28/49+9/90