Add 28/35 and 1/20
28/35 + 1/20 is 17/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 35 × 4 = 140,
28/35 = 28 × 4/35 × 4 = 112/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
1/20 = 1 × 7/20 × 7 = 7/140 - Add the two like fractions:
112/140 + 7/140 = 112 + 7/140 = 119/140 - 119/140 simplified gives 17/20
- So, 28/35 + 1/20 = 17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/35+1/20 28/35+2/20 28/70+1/20 28/35+1/40 84/35+1/20 28/35+3/20 28/35+1/60 28/35+5/20 28/35+7/20