Add 9/20 and 1/7
9/20 + 1/7 is 83/140.
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,
9/20 = 9 × 7/20 × 7 = 63/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
1/7 = 1 × 20/7 × 20 = 20/140 - Add the two like fractions:
63/140 + 20/140 = 63 + 20/140 = 83/140 - So, 9/20 + 1/7 = 83/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20+1/7 9/20+2/7 9/40+1/7 9/20+1/14 27/20+1/7 9/20+3/7 9/60+1/7 9/20+1/21 45/20+1/7 9/20+5/7 9/20+1/35 63/20+1/7 9/20+1/49