Add 28/40 and 36/45
28/40 + 36/45 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
28/40 = 28 × 9/40 × 9 = 252/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
36/45 = 36 × 8/45 × 8 = 288/360 - Add the two like fractions:
252/360 + 288/360 = 252 + 288/360 = 540/360 - 540/360 simplified gives 3/2
- So, 28/40 + 36/45 = 3/2
In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40+36/45 28/40+72/45 28/80+36/45 28/40+36/90 84/40+36/45