Add 3/20 and 9/70
3/20 + 9/70 is 39/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
3/20 = 3 × 7/20 × 7 = 21/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
9/70 = 9 × 2/70 × 2 = 18/140 - Add the two like fractions:
21/140 + 18/140 = 21 + 18/140 = 39/140 - So, 3/20 + 9/70 = 39/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20+9/70 3/20+18/70 3/40+9/70 9/20+9/70 3/20+27/70 3/60+9/70 15/20+9/70 3/20+45/70 21/20+9/70 3/20+63/70