Add 12/20 and 9/14
12/20 + 9/14 is 87/70.
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,
12/20 = 12 × 7/20 × 7 = 84/140 - Likewise, for the 2nd fraction, since 14 × 10 = 140,
9/14 = 9 × 10/14 × 10 = 90/140 - Add the two like fractions:
84/140 + 90/140 = 84 + 90/140 = 174/140 - 174/140 simplified gives 87/70
- So, 12/20 + 9/14 = 87/70
In mixed form: 117/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20+9/14 12/20+18/14 12/40+9/14 12/20+9/28 36/20+9/14 12/20+27/14 12/60+9/14 12/20+9/42 60/20+9/14 12/20+45/14 12/20+9/70 84/20+9/14 12/20+63/14 12/20+9/98