Add 63/84 and 81/70
1st number: 63/84, 2nd number: 1 11/70
63/84 + 81/70 is 267/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 70 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 70 × 6 = 420,
81/70 = 81 × 6/70 × 6 = 486/420 - Add the two like fractions:
315/420 + 486/420 = 315 + 486/420 = 801/420 - 801/420 simplified gives 267/140
- So, 63/84 + 81/70 = 267/140
In mixed form: 1127/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: