Add 3/84 and 25/70
3/84 + 25/70 is 11/28.
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,
3/84 = 3 × 5/84 × 5 = 15/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
25/70 = 25 × 6/70 × 6 = 150/420 - Add the two like fractions:
15/420 + 150/420 = 15 + 150/420 = 165/420 - 165/420 simplified gives 11/28
- So, 3/84 + 25/70 = 11/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/84+25/70 3/84+50/70 9/84+25/70 3/84+75/70 15/84+25/70 21/84+25/70