Add 28/64 and 18/45
28/64 + 18/45 is 67/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 45 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 64 × 45 = 2880,
28/64 = 28 × 45/64 × 45 = 1260/2880 - Likewise, for the 2nd fraction, since 45 × 64 = 2880,
18/45 = 18 × 64/45 × 64 = 1152/2880 - Add the two like fractions:
1260/2880 + 1152/2880 = 1260 + 1152/2880 = 2412/2880 - 2412/2880 simplified gives 67/80
- So, 28/64 + 18/45 = 67/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/64+18/45 28/64+36/45 28/64+18/90 84/64+18/45 28/64+54/45 28/64+90/45