Add 9/84 and 7/70
9/84 + 7/70 is 29/140.
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,
9/84 = 9 × 5/84 × 5 = 45/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
7/70 = 7 × 6/70 × 6 = 42/420 - Add the two like fractions:
45/420 + 42/420 = 45 + 42/420 = 87/420 - 87/420 simplified gives 29/140
- So, 9/84 + 7/70 = 29/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/84+7/70 9/84+14/70 27/84+7/70 9/84+21/70 45/84+7/70 9/84+35/70 63/84+7/70 9/84+49/70