Add 40/15 and 25/20
1st number: 2 10/15, 2nd number: 1 5/20
40/15 + 25/20 is 47/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 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 20 × 3 = 60,
25/20 = 25 × 3/20 × 3 = 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 + 25/20 = 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+25/20 40/15+50/20 40/30+25/20 40/15+25/40 40/15+75/20 40/45+25/20 40/15+25/60 40/75+25/20