Add 7/84 and 18/12
1st number: 7/84, 2nd number: 1 6/12
7/84 + 18/12 is 19/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
7/84 = 7 × 1/84 × 1 = 7/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
18/12 = 18 × 7/12 × 7 = 126/84 - Add the two like fractions:
7/84 + 126/84 = 7 + 126/84 = 133/84 - 133/84 simplified gives 19/12
- So, 7/84 + 18/12 = 19/12
In mixed form: 17/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84+18/12 7/84+36/12 7/84+18/24 21/84+18/12 7/84+54/12 7/84+18/36 35/84+18/12 7/84+90/12 7/84+18/60 49/84+18/12 7/84+18/84