Add 72/84 and 80/18
1st number: 72/84, 2nd number: 4 8/18
72/84 + 80/18 is 334/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
72/84 = 72 × 3/84 × 3 = 216/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
80/18 = 80 × 14/18 × 14 = 1120/252 - Add the two like fractions:
216/252 + 1120/252 = 216 + 1120/252 = 1336/252 - 1336/252 simplified gives 334/63
- So, 72/84 + 80/18 = 334/63
In mixed form: 519/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/84+80/36 72/84+80/54 72/84+80/90