Add 56/84 and 56/70
56/84 + 56/70 is 22/15.
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,
56/84 = 56 × 5/84 × 5 = 280/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
56/70 = 56 × 6/70 × 6 = 336/420 - Add the two like fractions:
280/420 + 336/420 = 280 + 336/420 = 616/420 - 616/420 simplified gives 22/15
- So, 56/84 + 56/70 = 22/15
In mixed form: 17/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: