Add 12/20 and 1/28
12/20 + 1/28 is 89/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 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 28 × 5 = 140,
1/28 = 1 × 5/28 × 5 = 5/140 - Add the two like fractions:
84/140 + 5/140 = 84 + 5/140 = 89/140 - So, 12/20 + 1/28 = 89/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20+1/28 12/20+2/28 12/40+1/28 12/20+1/56 36/20+1/28 12/20+3/28 12/60+1/28 12/20+1/84 60/20+1/28 12/20+5/28 84/20+1/28 12/20+7/28