Add 7/45 and 72/12
1st number: 7/45, 2nd number: 6 0/12
7/45 + 72/12 is 277/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
7/45 = 7 × 4/45 × 4 = 28/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
72/12 = 72 × 15/12 × 15 = 1080/180 - Add the two like fractions:
28/180 + 1080/180 = 28 + 1080/180 = 1108/180 - 1108/180 simplified gives 277/45
- So, 7/45 + 72/12 = 277/45
In mixed form: 67/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45+72/12 7/90+72/12 7/45+72/24 21/45+72/12 7/45+72/36 35/45+72/12 7/45+72/60 49/45+72/12 7/45+72/84