Add 90/75 and 28/45
1st number: 1 15/75, 2nd number: 28/45
90/75 + 28/45 is 82/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
90/75 = 90 × 3/75 × 3 = 270/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
28/45 = 28 × 5/45 × 5 = 140/225 - Add the two like fractions:
270/225 + 140/225 = 270 + 140/225 = 410/225 - 410/225 simplified gives 82/45
- So, 90/75 + 28/45 = 82/45
In mixed form: 137/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/75+56/45 90/75+28/90 90/75+84/45