Add 63/15 and 18/84
1st number: 4 3/15, 2nd number: 18/84
63/15 + 18/84 is 309/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
63/15 = 63 × 28/15 × 28 = 1764/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
18/84 = 18 × 5/84 × 5 = 90/420 - Add the two like fractions:
1764/420 + 90/420 = 1764 + 90/420 = 1854/420 - 1854/420 simplified gives 309/70
- So, 63/15 + 18/84 = 309/70
In mixed form: 429/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/15+36/84 63/30+18/84 63/15+54/84 63/45+18/84 63/15+90/84 63/75+18/84