Add 98/84 and 28/40
1st number: 1 14/84, 2nd number: 28/40
98/84 + 28/40 is 28/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
98/84 = 98 × 10/84 × 10 = 980/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
28/40 = 28 × 21/40 × 21 = 588/840 - Add the two like fractions:
980/840 + 588/840 = 980 + 588/840 = 1568/840 - 1568/840 simplified gives 28/15
- So, 98/84 + 28/40 = 28/15
In mixed form: 113/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/84+56/40 98/84+28/80 98/84+84/40