Add 54/40 and 15/28
1st number: 1 14/40, 2nd number: 15/28
54/40 + 15/28 is 66/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
54/40 = 54 × 7/40 × 7 = 378/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
15/28 = 15 × 10/28 × 10 = 150/280 - Add the two like fractions:
378/280 + 150/280 = 378 + 150/280 = 528/280 - 528/280 simplified gives 66/35
- So, 54/40 + 15/28 = 66/35
In mixed form: 131/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40+30/28 54/80+15/28 54/40+15/56 54/40+45/28 54/40+15/84 54/40+75/28