Add 4/20 and 2/7
4/20 + 2/7 is 17/35.
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,
4/20 = 4 × 7/20 × 7 = 28/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
2/7 = 2 × 20/7 × 20 = 40/140 - Add the two like fractions:
28/140 + 40/140 = 28 + 40/140 = 68/140 - 68/140 simplified gives 17/35
- So, 4/20 + 2/7 = 17/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/20+2/7 4/20+4/7 4/40+2/7 4/20+2/14 12/20+2/7 4/20+6/7 4/60+2/7 4/20+2/21 4/20+10/7 4/20+2/35 28/20+2/7 4/20+14/7 4/20+2/49