Add 72/84 and 30/75
72/84 + 30/75 is 44/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 75 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
72/84 = 72 × 25/84 × 25 = 1800/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
30/75 = 30 × 28/75 × 28 = 840/2100 - Add the two like fractions:
1800/2100 + 840/2100 = 1800 + 840/2100 = 2640/2100 - 2640/2100 simplified gives 44/35
- So, 72/84 + 30/75 = 44/35
In mixed form: 19/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/84+60/75 72/84+90/75