Add 28/90 and 20/5
1st number: 28/90, 2nd number: 4 0/5
28/90 + 20/5 is 194/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
28/90 = 28 × 1/90 × 1 = 28/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
20/5 = 20 × 18/5 × 18 = 360/90 - Add the two like fractions:
28/90 + 360/90 = 28 + 360/90 = 388/90 - 388/90 simplified gives 194/45
- So, 28/90 + 20/5 = 194/45
In mixed form: 414/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+20/5 28/90+40/5 28/90+20/10 84/90+20/5 28/90+60/5 28/90+20/15 28/90+20/25 28/90+20/35