Add 70/28 and 30/54
1st number: 2 14/28, 2nd number: 30/54
70/28 + 30/54 is 55/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
70/28 = 70 × 27/28 × 27 = 1890/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
30/54 = 30 × 14/54 × 14 = 420/756 - Add the two like fractions:
1890/756 + 420/756 = 1890 + 420/756 = 2310/756 - 2310/756 simplified gives 55/18
- So, 70/28 + 30/54 = 55/18
In mixed form: 31/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/28+60/54 70/56+30/54 70/28+90/54 70/84+30/54