Add 70/84 and 63/72
70/84 + 63/72 is 41/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 84 × 6 = 504,
70/84 = 70 × 6/84 × 6 = 420/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
63/72 = 63 × 7/72 × 7 = 441/504 - Add the two like fractions:
420/504 + 441/504 = 420 + 441/504 = 861/504 - 861/504 simplified gives 41/24
- So, 70/84 + 63/72 = 41/24
In mixed form: 117/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: