Add 4/84 and 24/21
1st number: 4/84, 2nd number: 1 3/21
4/84 + 24/21 is 25/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
4/84 = 4 × 1/84 × 1 = 4/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
24/21 = 24 × 4/21 × 4 = 96/84 - Add the two like fractions:
4/84 + 96/84 = 4 + 96/84 = 100/84 - 100/84 simplified gives 25/21
- So, 4/84 + 24/21 = 25/21
In mixed form: 14/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/84+24/21 4/84+48/21 4/84+24/42 12/84+24/21 4/84+72/21 4/84+24/63 20/84+24/21 28/84+24/21