Add 72/20 and 1/14
1st number: 3 12/20, 2nd number: 1/14
72/20 + 1/14 is 257/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 14 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 14 × 10 = 140,
1/14 = 1 × 10/14 × 10 = 10/140 - Add the two like fractions:
504/140 + 10/140 = 504 + 10/140 = 514/140 - 514/140 simplified gives 257/70
- So, 72/20 + 1/14 = 257/70
In mixed form: 347/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+2/14 72/40+1/14 72/20+1/28 72/20+3/14 72/60+1/14 72/20+1/42 72/20+5/14 72/20+1/70 72/20+7/14 72/20+1/98