Add 21/4 and 35/84
1st number: 5 1/4, 2nd number: 35/84
21/4 + 35/84 is 17/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
21/4 = 21 × 21/4 × 21 = 441/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
35/84 = 35 × 1/84 × 1 = 35/84 - Add the two like fractions:
441/84 + 35/84 = 441 + 35/84 = 476/84 - 476/84 simplified gives 17/3
- So, 21/4 + 35/84 = 17/3
In mixed form: 52/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4+35/84 21/4+70/84 21/8+35/84 63/4+35/84 21/12+35/84 21/20+35/84 21/28+35/84