Add 45/20 and 4/12
1st number: 2 5/20, 2nd number: 4/12
45/20 + 4/12 is 31/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
45/20 = 45 × 3/20 × 3 = 135/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
4/12 = 4 × 5/12 × 5 = 20/60 - Add the two like fractions:
135/60 + 20/60 = 135 + 20/60 = 155/60 - 155/60 simplified gives 31/12
- So, 45/20 + 4/12 = 31/12
In mixed form: 27/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20+4/12 45/20+8/12 45/40+4/12 45/20+4/24 45/60+4/12 45/20+4/36 45/20+20/12 45/20+4/60 45/20+28/12 45/20+4/84