Add 70/84 and 30/9
1st number: 70/84, 2nd number: 3 3/9
70/84 + 30/9 is 25/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
70/84 = 70 × 3/84 × 3 = 210/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
30/9 = 30 × 28/9 × 28 = 840/252 - Add the two like fractions:
210/252 + 840/252 = 210 + 840/252 = 1050/252 - 1050/252 simplified gives 25/6
- So, 70/84 + 30/9 = 25/6
In mixed form: 41/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84+60/9 70/84+30/18 70/84+90/9 70/84+30/27 70/84+30/45 70/84+30/63