Add 98/84 and 21/63
1st number: 1 14/84, 2nd number: 21/63
98/84 + 21/63 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
98/84 = 98 × 3/84 × 3 = 294/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
21/63 = 21 × 4/63 × 4 = 84/252 - Add the two like fractions:
294/252 + 84/252 = 294 + 84/252 = 378/252 - 378/252 simplified gives 3/2
- So, 98/84 + 21/63 = 3/2
In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/84+42/63