Add 36/84 and 8/20
36/84 + 8/20 is 29/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
36/84 = 36 × 5/84 × 5 = 180/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
8/20 = 8 × 21/20 × 21 = 168/420 - Add the two like fractions:
180/420 + 168/420 = 180 + 168/420 = 348/420 - 348/420 simplified gives 29/35
- So, 36/84 + 8/20 = 29/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/84+8/20 36/84+16/20 36/84+8/40 36/84+24/20 36/84+8/60 36/84+40/20 36/84+56/20