Add 14/18 and 84/90
14/18 + 84/90 is 77/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
14/18 = 14 × 5/18 × 5 = 70/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
84/90 = 84 × 1/90 × 1 = 84/90 - Add the two like fractions:
70/90 + 84/90 = 70 + 84/90 = 154/90 - 154/90 simplified gives 77/45
- So, 14/18 + 84/90 = 77/45
In mixed form: 132/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/18+84/90 14/36+84/90 42/18+84/90 14/54+84/90 70/18+84/90 14/90+84/90 98/18+84/90