Add 30/84 and 35/70
30/84 + 35/70 is 6/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
30/84 = 30 × 5/84 × 5 = 150/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
35/70 = 35 × 6/70 × 6 = 210/420 - Add the two like fractions:
150/420 + 210/420 = 150 + 210/420 = 360/420 - 360/420 simplified gives 6/7
- So, 30/84 + 35/70 = 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84+35/70 90/84+35/70