Add 45/28 and 36/40
1st number: 1 17/28, 2nd number: 36/40
45/28 + 36/40 is 351/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
45/28 = 45 × 10/28 × 10 = 450/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
36/40 = 36 × 7/40 × 7 = 252/280 - Add the two like fractions:
450/280 + 252/280 = 450 + 252/280 = 702/280 - 702/280 simplified gives 351/140
- So, 45/28 + 36/40 = 351/140
In mixed form: 271/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28+36/40 45/28+72/40 45/56+36/40 45/28+36/80 45/84+36/40