Add 1/20 and 45/28
1st number: 1/20, 2nd number: 1 17/28
1/20 + 45/28 is 58/35.
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,
1/20 = 1 × 7/20 × 7 = 7/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
45/28 = 45 × 5/28 × 5 = 225/140 - Add the two like fractions:
7/140 + 225/140 = 7 + 225/140 = 232/140 - 232/140 simplified gives 58/35
- So, 1/20 + 45/28 = 58/35
In mixed form: 123/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20+45/28 1/20+90/28 1/40+45/28 1/20+45/56 3/20+45/28 1/60+45/28 1/20+45/84 5/20+45/28 7/20+45/28