Add 18/20 and 2/28
18/20 + 2/28 is 34/35.
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,
18/20 = 18 × 7/20 × 7 = 126/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
2/28 = 2 × 5/28 × 5 = 10/140 - Add the two like fractions:
126/140 + 10/140 = 126 + 10/140 = 136/140 - 136/140 simplified gives 34/35
- So, 18/20 + 2/28 = 34/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20+2/28 18/20+4/28 18/40+2/28 18/20+2/56 54/20+2/28 18/20+6/28 18/60+2/28 18/20+2/84 90/20+2/28 18/20+10/28 18/20+14/28