Add 90/14 and 15/9
1st number: 6 6/14, 2nd number: 1 6/9
90/14 + 15/9 is 170/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 14 × 9 = 126,
90/14 = 90 × 9/14 × 9 = 810/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
15/9 = 15 × 14/9 × 14 = 210/126 - Add the two like fractions:
810/126 + 210/126 = 810 + 210/126 = 1020/126 - 1020/126 simplified gives 170/21
- So, 90/14 + 15/9 = 170/21
In mixed form: 82/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/14+30/9 90/28+15/9 90/14+15/18 90/14+45/9 90/42+15/9 90/14+15/27 90/14+75/9 90/70+15/9 90/14+15/45 90/98+15/9 90/14+15/63