Add 56/84 and 75/70
1st number: 56/84, 2nd number: 1 5/70
56/84 + 75/70 is 73/42.
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,
75/70 = 75 × 6/70 × 6 = 450/420 - Add the two like fractions:
280/420 + 450/420 = 280 + 450/420 = 730/420 - 730/420 simplified gives 73/42
- So, 56/84 + 75/70 = 73/42
In mixed form: 131/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: