Add 70/56 and 21/54
1st number: 1 14/56, 2nd number: 21/54
70/56 + 21/54 is 59/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 54 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 56 × 27 = 1512,
70/56 = 70 × 27/56 × 27 = 1890/1512 - Likewise, for the 2nd fraction, since 54 × 28 = 1512,
21/54 = 21 × 28/54 × 28 = 588/1512 - Add the two like fractions:
1890/1512 + 588/1512 = 1890 + 588/1512 = 2478/1512 - 2478/1512 simplified gives 59/36
- So, 70/56 + 21/54 = 59/36
In mixed form: 123/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/56+42/54 70/56+63/54