Add 1/20 and 7/84
1/20 + 7/84 is 2/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
1/20 = 1 × 21/20 × 21 = 21/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
7/84 = 7 × 5/84 × 5 = 35/420 - Add the two like fractions:
21/420 + 35/420 = 21 + 35/420 = 56/420 - 56/420 simplified gives 2/15
- So, 1/20 + 7/84 = 2/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20+7/84 1/20+14/84 1/40+7/84 3/20+7/84 1/20+21/84 1/60+7/84 5/20+7/84 1/20+35/84 7/20+7/84 1/20+49/84