Add 28/90 and 28/7
1st number: 28/90, 2nd number: 4 0/7
28/90 + 28/7 is 194/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
28/90 = 28 × 7/90 × 7 = 196/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
28/7 = 28 × 90/7 × 90 = 2520/630 - Add the two like fractions:
196/630 + 2520/630 = 196 + 2520/630 = 2716/630 - 2716/630 simplified gives 194/45
- So, 28/90 + 28/7 = 194/45
In mixed form: 414/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+28/7 28/90+56/7 28/90+28/14 84/90+28/7 28/90+84/7 28/90+28/21 28/90+28/35 28/90+28/49