Add 12/15 and 60/40
1st number: 12/15, 2nd number: 1 20/40
12/15 + 60/40 is 23/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
12/15 = 12 × 8/15 × 8 = 96/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
60/40 = 60 × 3/40 × 3 = 180/120 - Add the two like fractions:
96/120 + 180/120 = 96 + 180/120 = 276/120 - 276/120 simplified gives 23/10
- So, 12/15 + 60/40 = 23/10
In mixed form: 23/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+60/40 12/30+60/40 12/15+60/80 36/15+60/40 12/45+60/40 60/15+60/40 12/75+60/40 84/15+60/40