Add 72/84 and 35/50
72/84 + 35/50 is 109/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 50 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 50 × 42 = 2100,
35/50 = 35 × 42/50 × 42 = 1470/2100 - Add the two like fractions:
1800/2100 + 1470/2100 = 1800 + 1470/2100 = 3270/2100 - 3270/2100 simplified gives 109/70
- So, 72/84 + 35/50 = 109/70
In mixed form: 139/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/84+70/50