Add 8/20 and 3/84
8/20 + 3/84 is 61/140.
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,
8/20 = 8 × 21/20 × 21 = 168/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
3/84 = 3 × 5/84 × 5 = 15/420 - Add the two like fractions:
168/420 + 15/420 = 168 + 15/420 = 183/420 - 183/420 simplified gives 61/140
- So, 8/20 + 3/84 = 61/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/20+3/84 8/20+6/84 8/40+3/84 24/20+3/84 8/20+9/84 8/60+3/84 40/20+3/84 8/20+15/84 56/20+3/84 8/20+21/84