Add 72/35 and 12/84
1st number: 2 2/35, 2nd number: 12/84
72/35 + 12/84 is 11/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
72/35 = 72 × 12/35 × 12 = 864/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
12/84 = 12 × 5/84 × 5 = 60/420 - Add the two like fractions:
864/420 + 60/420 = 864 + 60/420 = 924/420 - 924/420 simplified gives 11/5
- So, 72/35 + 12/84 = 11/5
In mixed form: 21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/35+24/84 72/70+12/84 72/35+36/84 72/35+60/84