Add 15/45 and 3/10
15/45 + 3/10 is 19/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
15/45 = 15 × 2/45 × 2 = 30/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
3/10 = 3 × 9/10 × 9 = 27/90 - Add the two like fractions:
30/90 + 27/90 = 30 + 27/90 = 57/90 - 57/90 simplified gives 19/30
- So, 15/45 + 3/10 = 19/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/45+3/10 15/45+6/10 15/90+3/10 15/45+3/20 15/45+9/10 15/45+3/30 75/45+3/10 15/45+15/10 15/45+3/50 15/45+21/10 15/45+3/70