Add 12/20 and 5/7
12/20 + 5/7 is 46/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 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 7 × 20 = 140,
5/7 = 5 × 20/7 × 20 = 100/140 - Add the two like fractions:
84/140 + 100/140 = 84 + 100/140 = 184/140 - 184/140 simplified gives 46/35
- So, 12/20 + 5/7 = 46/35
In mixed form: 111/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20+5/7 12/20+10/7 12/40+5/7 12/20+5/14 36/20+5/7 12/20+15/7 12/60+5/7 12/20+5/21 60/20+5/7 12/20+25/7 12/20+5/35 84/20+5/7 12/20+35/7 12/20+5/49