Add 20/70 and 54/28
1st number: 20/70, 2nd number: 1 26/28
20/70 + 54/28 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
20/70 = 20 × 2/70 × 2 = 40/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
54/28 = 54 × 5/28 × 5 = 270/140 - Add the two like fractions:
40/140 + 270/140 = 40 + 270/140 = 310/140 - 310/140 simplified gives 31/14
- So, 20/70 + 54/28 = 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: 40/70+54/28 20/70+54/56 60/70+54/28 20/70+54/84