Add 63/84 and 18/10
1st number: 63/84, 2nd number: 1 8/10
63/84 + 18/10 is 51/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
63/84 = 63 × 5/84 × 5 = 315/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
18/10 = 18 × 42/10 × 42 = 756/420 - Add the two like fractions:
315/420 + 756/420 = 315 + 756/420 = 1071/420 - 1071/420 simplified gives 51/20
- So, 63/84 + 18/10 = 51/20
In mixed form: 211/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/84+36/10 63/84+18/20 63/84+54/10 63/84+18/30 63/84+90/10 63/84+18/50 63/84+18/70