Add 20/72 and 8/84
20/72 + 8/84 is 47/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 84 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
20/72 = 20 × 7/72 × 7 = 140/504 - Likewise, for the 2nd fraction, since 84 × 6 = 504,
8/84 = 8 × 6/84 × 6 = 48/504 - Add the two like fractions:
140/504 + 48/504 = 140 + 48/504 = 188/504 - 188/504 simplified gives 47/126
- So, 20/72 + 8/84 = 47/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/72+8/84 20/72+16/84 60/72+8/84 20/72+24/84 20/72+40/84 20/72+56/84