Add 28/90 and 56/49
1st number: 28/90, 2nd number: 1 7/49
28/90 + 56/49 is 458/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 49 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
28/90 = 28 × 49/90 × 49 = 1372/4410 - Likewise, for the 2nd fraction, since 49 × 90 = 4410,
56/49 = 56 × 90/49 × 90 = 5040/4410 - Add the two like fractions:
1372/4410 + 5040/4410 = 1372 + 5040/4410 = 6412/4410 - 6412/4410 simplified gives 458/315
- So, 28/90 + 56/49 = 458/315
In mixed form: 1143/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+56/49 28/90+56/98 84/90+56/49