Add 75/84 and 72/18
1st number: 75/84, 2nd number: 4 0/18
75/84 + 72/18 is 137/28.
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,
75/84 = 75 × 3/84 × 3 = 225/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
72/18 = 72 × 14/18 × 14 = 1008/252 - Add the two like fractions:
225/252 + 1008/252 = 225 + 1008/252 = 1233/252 - 1233/252 simplified gives 137/28
- So, 75/84 + 72/18 = 137/28
In mixed form: 425/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/84+72/36 75/84+72/54 75/84+72/90