Add 12/40 and 10/12
12/40 + 10/12 is 17/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
12/40 = 12 × 3/40 × 3 = 36/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
10/12 = 10 × 10/12 × 10 = 100/120 - Add the two like fractions:
36/120 + 100/120 = 36 + 100/120 = 136/120 - 136/120 simplified gives 17/15
- So, 12/40 + 10/12 = 17/15
In mixed form: 12/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40+10/12 12/40+20/12 12/80+10/12 12/40+10/24 36/40+10/12 12/40+30/12 12/40+10/36 60/40+10/12 12/40+50/12 12/40+10/60 84/40+10/12 12/40+70/12 12/40+10/84