Add 45/12 and 45/20
1st number: 3 9/12, 2nd number: 2 5/20
45/12 + 45/20 is 6/1.
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,
45/20 = 45 × 3/20 × 3 = 135/60 - Add the two like fractions:
225/60 + 135/60 = 225 + 135/60 = 360/60 - 360/60 simplified gives 6/1
- So, 45/12 + 45/20 = 6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+45/20 45/12+90/20 45/24+45/20 45/12+45/40 45/36+45/20 45/12+45/60 45/60+45/20 45/84+45/20