Add 63/28 and 90/27
1st number: 2 7/28, 2nd number: 3 9/27
63/28 + 90/27 is 67/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
63/28 = 63 × 27/28 × 27 = 1701/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
90/27 = 90 × 28/27 × 28 = 2520/756 - Add the two like fractions:
1701/756 + 2520/756 = 1701 + 2520/756 = 4221/756 - 4221/756 simplified gives 67/12
- So, 63/28 + 90/27 = 67/12
In mixed form: 57/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/56+90/27 63/28+90/54 63/84+90/27 63/28+90/81