Add 2/4 and 21/84
2/4 + 21/84 is 3/4.
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,
2/4 = 2 × 21/4 × 21 = 42/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Add the two like fractions:
42/84 + 21/84 = 42 + 21/84 = 63/84 - 63/84 simplified gives 3/4
- So, 2/4 + 21/84 = 3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/4+42/84 2/8+21/84 6/4+21/84 2/4+63/84 2/12+21/84 10/4+21/84 2/20+21/84 14/4+21/84 2/28+21/84