Add 30/12 and 30/84
1st number: 2 6/12, 2nd number: 30/84
30/12 + 30/84 is 20/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
30/12 = 30 × 7/12 × 7 = 210/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
30/84 = 30 × 1/84 × 1 = 30/84 - Add the two like fractions:
210/84 + 30/84 = 210 + 30/84 = 240/84 - 240/84 simplified gives 20/7
- So, 30/12 + 30/84 = 20/7
In mixed form: 26/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12+30/84 30/12+60/84 30/24+30/84 90/12+30/84 30/12+90/84 30/36+30/84 30/60+30/84 30/84+30/84