Add 25/40 and 42/12
1st number: 25/40, 2nd number: 3 6/12
25/40 + 42/12 is 33/8.
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,
25/40 = 25 × 3/40 × 3 = 75/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
42/12 = 42 × 10/12 × 10 = 420/120 - Add the two like fractions:
75/120 + 420/120 = 75 + 420/120 = 495/120 - 495/120 simplified gives 33/8
- So, 25/40 + 42/12 = 33/8
In mixed form: 41/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/40+42/12 25/40+84/12 25/80+42/12 25/40+42/24 75/40+42/12 25/40+42/36 25/40+42/60 25/40+42/84