Add 72/12 and 30/45
1st number: 6 0/12, 2nd number: 30/45
72/12 + 30/45 is 20/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
72/12 = 72 × 15/12 × 15 = 1080/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
30/45 = 30 × 4/45 × 4 = 120/180 - Add the two like fractions:
1080/180 + 120/180 = 1080 + 120/180 = 1200/180 - 1200/180 simplified gives 20/3
- So, 72/12 + 30/45 = 20/3
In mixed form: 62/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/12+60/45 72/24+30/45 72/12+30/90 72/12+90/45 72/36+30/45 72/60+30/45 72/84+30/45