Add 72/20 and 3/35
1st number: 3 12/20, 2nd number: 3/35
72/20 + 3/35 is 129/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
72/20 = 72 × 7/20 × 7 = 504/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
3/35 = 3 × 4/35 × 4 = 12/140 - Add the two like fractions:
504/140 + 12/140 = 504 + 12/140 = 516/140 - 516/140 simplified gives 129/35
- So, 72/20 + 3/35 = 129/35
In mixed form: 324/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+6/35 72/40+3/35 72/20+3/70 72/20+9/35 72/60+3/35 72/20+15/35 72/20+21/35