Add 18/84 and 10/12
18/84 + 10/12 is 22/21.
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,
18/84 = 18 × 1/84 × 1 = 18/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
10/12 = 10 × 7/12 × 7 = 70/84 - Add the two like fractions:
18/84 + 70/84 = 18 + 70/84 = 88/84 - 88/84 simplified gives 22/21
- So, 18/84 + 10/12 = 22/21
In mixed form: 11/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/84+10/12 18/84+20/12 18/84+10/24 54/84+10/12 18/84+30/12 18/84+10/36 90/84+10/12 18/84+50/12 18/84+10/60 18/84+70/12 18/84+10/84