Add 45/12 and 30/5
1st number: 3 9/12, 2nd number: 6 0/5
45/12 + 30/5 is 39/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 5 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 5 × 12 = 60,
30/5 = 30 × 12/5 × 12 = 360/60 - Add the two like fractions:
225/60 + 360/60 = 225 + 360/60 = 585/60 - 585/60 simplified gives 39/4
- So, 45/12 + 30/5 = 39/4
In mixed form: 93/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+30/5 45/12+60/5 45/24+30/5 45/12+30/10 45/12+90/5 45/36+30/5 45/12+30/15 45/60+30/5 45/12+30/25 45/84+30/5 45/12+30/35