Add 18/9 and 45/15
1st number: 2 0/9, 2nd number: 3 0/15
18/9 + 45/15 is 5/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
18/9 = 18 × 5/9 × 5 = 90/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
45/15 = 45 × 3/15 × 3 = 135/45 - Add the two like fractions:
90/45 + 135/45 = 90 + 135/45 = 225/45 - 225/45 simplified gives 5/1
- So, 18/9 + 45/15 = 5/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/9+45/15 18/9+90/15 18/9+45/30 54/9+45/15 18/27+45/15 90/9+45/15 18/45+45/15 18/9+45/75 18/63+45/15