Add 18/12 and 12/72
1st number: 1 6/12, 2nd number: 12/72
18/12 + 12/72 is 5/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
18/12 = 18 × 6/12 × 6 = 108/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
12/72 = 12 × 1/72 × 1 = 12/72 - Add the two like fractions:
108/72 + 12/72 = 108 + 12/72 = 120/72 - 120/72 simplified gives 5/3
- So, 18/12 + 12/72 = 5/3
In mixed form: 12/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+12/72 18/12+24/72 18/24+12/72 54/12+12/72 18/12+36/72 18/36+12/72 90/12+12/72 18/12+60/72 18/60+12/72 18/12+84/72 18/84+12/72