Add 98/84 and 84/90
1st number: 1 14/84, 2nd number: 84/90
98/84 + 84/90 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
98/84 = 98 × 15/84 × 15 = 1470/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
84/90 = 84 × 14/90 × 14 = 1176/1260 - Add the two like fractions:
1470/1260 + 1176/1260 = 1470 + 1176/1260 = 2646/1260 - 2646/1260 simplified gives 21/10
- So, 98/84 + 84/90 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: