Add 45/5 and 20/28
1st number: 9 0/5, 2nd number: 20/28
45/5 + 20/28 is 68/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 5 × 28 = 140,
45/5 = 45 × 28/5 × 28 = 1260/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
20/28 = 20 × 5/28 × 5 = 100/140 - Add the two like fractions:
1260/140 + 100/140 = 1260 + 100/140 = 1360/140 - 1360/140 simplified gives 68/7
- So, 45/5 + 20/28 = 68/7
In mixed form: 95/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/5+20/28 45/5+40/28 45/10+20/28 45/5+20/56 45/5+60/28 45/15+20/28 45/5+20/84 45/25+20/28 45/35+20/28