Add 28/14 and 54/90
1st number: 2 0/14, 2nd number: 54/90
28/14 + 54/90 is 13/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 14 × 45 = 630,
28/14 = 28 × 45/14 × 45 = 1260/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
54/90 = 54 × 7/90 × 7 = 378/630 - Add the two like fractions:
1260/630 + 378/630 = 1260 + 378/630 = 1638/630 - 1638/630 simplified gives 13/5
- So, 28/14 + 54/90 = 13/5
In mixed form: 23/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14+54/90 84/14+54/90 28/42+54/90 28/70+54/90 28/98+54/90