Add 28/45 and 56/40
1st number: 28/45, 2nd number: 1 16/40
28/45 + 56/40 is 91/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
28/45 = 28 × 8/45 × 8 = 224/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
56/40 = 56 × 9/40 × 9 = 504/360 - Add the two like fractions:
224/360 + 504/360 = 224 + 504/360 = 728/360 - 728/360 simplified gives 91/45
- So, 28/45 + 56/40 = 91/45
In mixed form: 21/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45+56/40 28/90+56/40 28/45+56/80 84/45+56/40