Add 63/84 and 80/70
1st number: 63/84, 2nd number: 1 10/70
63/84 + 80/70 is 53/28.
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,
80/70 = 80 × 6/70 × 6 = 480/420 - Add the two like fractions:
315/420 + 480/420 = 315 + 480/420 = 795/420 - 795/420 simplified gives 53/28
- So, 63/84 + 80/70 = 53/28
In mixed form: 125/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: