Add 84/72 and 72/75
1st number: 1 12/72, 2nd number: 72/75
84/72 + 72/75 is 319/150.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 75 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 72 × 25 = 1800,
84/72 = 84 × 25/72 × 25 = 2100/1800 - Likewise, for the 2nd fraction, since 75 × 24 = 1800,
72/75 = 72 × 24/75 × 24 = 1728/1800 - Add the two like fractions:
2100/1800 + 1728/1800 = 2100 + 1728/1800 = 3828/1800 - 3828/1800 simplified gives 319/150
- So, 84/72 + 72/75 = 319/150
In mixed form: 219/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: