Add 4/12 and 20/84
4/12 + 20/84 is 4/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
4/12 = 4 × 7/12 × 7 = 28/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
20/84 = 20 × 1/84 × 1 = 20/84 - Add the two like fractions:
28/84 + 20/84 = 28 + 20/84 = 48/84 - 48/84 simplified gives 4/7
- So, 4/12 + 20/84 = 4/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/12+20/84 4/12+40/84 4/24+20/84 4/12+60/84 4/36+20/84 20/12+20/84 4/60+20/84 28/12+20/84 4/84+20/84