Add 7/84 and 63/70
7/84 + 63/70 is 59/60.
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,
7/84 = 7 × 5/84 × 5 = 35/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
63/70 = 63 × 6/70 × 6 = 378/420 - Add the two like fractions:
35/420 + 378/420 = 35 + 378/420 = 413/420 - 413/420 simplified gives 59/60
- So, 7/84 + 63/70 = 59/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84+63/70 21/84+63/70 35/84+63/70 49/84+63/70