Add 70/56 and 81/84
1st number: 1 14/56, 2nd number: 81/84
70/56 + 81/84 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
70/56 = 70 × 3/56 × 3 = 210/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
81/84 = 81 × 2/84 × 2 = 162/168 - Add the two like fractions:
210/168 + 162/168 = 210 + 162/168 = 372/168 - 372/168 simplified gives 31/14
- So, 70/56 + 81/84 = 31/14
In mixed form: 23/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: