Add 45/12 and 54/30
1st number: 3 9/12, 2nd number: 1 24/30
45/12 + 54/30 is 111/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 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 30 × 2 = 60,
54/30 = 54 × 2/30 × 2 = 108/60 - Add the two like fractions:
225/60 + 108/60 = 225 + 108/60 = 333/60 - 333/60 simplified gives 111/20
- So, 45/12 + 54/30 = 111/20
In mixed form: 511/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+54/30 45/24+54/30 45/12+54/60 45/36+54/30 45/12+54/90 45/60+54/30 45/84+54/30