Add 40/30 and 15/20
1st number: 1 10/30, 2nd number: 15/20
40/30 + 15/20 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
40/30 = 40 × 2/30 × 2 = 80/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
15/20 = 15 × 3/20 × 3 = 45/60 - Add the two like fractions:
80/60 + 45/60 = 80 + 45/60 = 125/60 - 125/60 simplified gives 25/12
- So, 40/30 + 15/20 = 25/12
In mixed form: 21/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30+15/20 40/30+30/20 40/60+15/20 40/30+15/40 40/30+45/20 40/90+15/20 40/30+15/60 40/30+75/20