Add 40/15 and 5/4
1st number: 2 10/15, 2nd number: 1 1/4
40/15 + 5/4 is 47/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 4 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
40/15 = 40 × 4/15 × 4 = 160/60 - Likewise, for the 2nd fraction, since 4 × 15 = 60,
5/4 = 5 × 15/4 × 15 = 75/60 - Add the two like fractions:
160/60 + 75/60 = 160 + 75/60 = 235/60 - 235/60 simplified gives 47/12
- So, 40/15 + 5/4 = 47/12
In mixed form: 311/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15+5/4 40/15+10/4 40/30+5/4 40/15+5/8 40/15+15/4 40/45+5/4 40/15+5/12 40/15+25/4 40/75+5/4 40/15+5/20 40/15+35/4 40/15+5/28