Add 54/15 and 40/7
1st number: 3 9/15, 2nd number: 5 5/7
54/15 + 40/7 is 326/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
54/15 = 54 × 7/15 × 7 = 378/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
40/7 = 40 × 15/7 × 15 = 600/105 - Add the two like fractions:
378/105 + 600/105 = 378 + 600/105 = 978/105 - 978/105 simplified gives 326/35
- So, 54/15 + 40/7 = 326/35
In mixed form: 911/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15+80/7 54/30+40/7 54/15+40/14 54/45+40/7 54/15+40/21 54/75+40/7 54/15+40/35 54/15+40/49