Add 45/12 and 32/20
1st number: 3 9/12, 2nd number: 1 12/20
45/12 + 32/20 is 107/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
45/12 = 45 × 5/12 × 5 = 225/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
32/20 = 32 × 3/20 × 3 = 96/60 - Add the two like fractions:
225/60 + 96/60 = 225 + 96/60 = 321/60 - 321/60 simplified gives 107/20
- So, 45/12 + 32/20 = 107/20
In mixed form: 57/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+32/20 45/12+64/20 45/24+32/20 45/12+32/40 45/12+96/20 45/36+32/20 45/12+32/60 45/60+32/20 45/84+32/20