Add 15/75 and 5/20
15/75 + 5/20 is 9/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 20 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
15/75 = 15 × 4/75 × 4 = 60/300 - Likewise, for the 2nd fraction, since 20 × 15 = 300,
5/20 = 5 × 15/20 × 15 = 75/300 - Add the two like fractions:
60/300 + 75/300 = 60 + 75/300 = 135/300 - 135/300 simplified gives 9/20
- So, 15/75 + 5/20 = 9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/75+5/20 15/75+10/20 15/75+5/40 45/75+5/20 15/75+15/20 15/75+5/60 15/75+25/20 15/75+35/20