Add 20/28 and 90/56
1st number: 20/28, 2nd number: 1 34/56
20/28 + 90/56 is 65/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
20/28 = 20 × 2/28 × 2 = 40/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
90/56 = 90 × 1/56 × 1 = 90/56 - Add the two like fractions:
40/56 + 90/56 = 40 + 90/56 = 130/56 - 130/56 simplified gives 65/28
- So, 20/28 + 90/56 = 65/28
In mixed form: 29/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28+90/56 20/56+90/56 60/28+90/56 20/84+90/56