Add 18/84 and 14/20
18/84 + 14/20 is 32/35.
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,
18/84 = 18 × 5/84 × 5 = 90/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
14/20 = 14 × 21/20 × 21 = 294/420 - Add the two like fractions:
90/420 + 294/420 = 90 + 294/420 = 384/420 - 384/420 simplified gives 32/35
- So, 18/84 + 14/20 = 32/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/84+14/20 18/84+28/20 18/84+14/40 54/84+14/20 18/84+42/20 18/84+14/60 90/84+14/20 18/84+70/20 18/84+98/20