Add 84/12 and 7/20
1st number: 7 0/12, 2nd number: 7/20
84/12 + 7/20 is 147/20.
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,
84/12 = 84 × 5/12 × 5 = 420/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
7/20 = 7 × 3/20 × 3 = 21/60 - Add the two like fractions:
420/60 + 21/60 = 420 + 21/60 = 441/60 - 441/60 simplified gives 147/20
- So, 84/12 + 7/20 = 147/20
In mixed form: 77/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+14/20 84/24+7/20 84/12+7/40 84/12+21/20 84/36+7/20 84/12+7/60 84/12+35/20 84/60+7/20 84/12+49/20