Add 5/30 and 18/84
5/30 + 18/84 is 8/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
5/30 = 5 × 14/30 × 14 = 70/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
18/84 = 18 × 5/84 × 5 = 90/420 - Add the two like fractions:
70/420 + 90/420 = 70 + 90/420 = 160/420 - 160/420 simplified gives 8/21
- So, 5/30 + 18/84 = 8/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/30+18/84 5/30+36/84 5/60+18/84 15/30+18/84 5/30+54/84 5/90+18/84 25/30+18/84 5/30+90/84 35/30+18/84