Add 90/3 and 9/7
1st number: 30 0/3, 2nd number: 1 2/7
90/3 + 9/7 is 219/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
90/3 = 90 × 7/3 × 7 = 630/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
9/7 = 9 × 3/7 × 3 = 27/21 - Add the two like fractions:
630/21 + 27/21 = 630 + 27/21 = 657/21 - 657/21 simplified gives 219/7
- So, 90/3 + 9/7 = 219/7
In mixed form: 312/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/3+18/7 90/6+9/7 90/3+9/14 90/3+27/7 90/9+9/7 90/3+9/21 90/3+45/7 90/15+9/7 90/3+9/35 90/3+63/7 90/21+9/7 90/3+9/49