Add 20/45 and 1/28
20/45 + 1/28 is 121/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
20/45 = 20 × 28/45 × 28 = 560/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
1/28 = 1 × 45/28 × 45 = 45/1260 - Add the two like fractions:
560/1260 + 45/1260 = 560 + 45/1260 = 605/1260 - 605/1260 simplified gives 121/252
- So, 20/45 + 1/28 = 121/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45+1/28 20/45+2/28 20/90+1/28 20/45+1/56 60/45+1/28 20/45+3/28 20/45+1/84 20/45+5/28 20/45+7/28