Add 12/20 and 8/7
1st number: 12/20, 2nd number: 1 1/7
12/20 + 8/7 is 61/35.
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,
8/7 = 8 × 20/7 × 20 = 160/140 - Add the two like fractions:
84/140 + 160/140 = 84 + 160/140 = 244/140 - 244/140 simplified gives 61/35
- So, 12/20 + 8/7 = 61/35
In mixed form: 126/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20+8/7 12/20+16/7 12/40+8/7 12/20+8/14 36/20+8/7 12/20+24/7 12/60+8/7 12/20+8/21 60/20+8/7 12/20+40/7 12/20+8/35 84/20+8/7 12/20+56/7 12/20+8/49