Add 3/18 and 45/30
1st number: 3/18, 2nd number: 1 15/30
3/18 + 45/30 is 5/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
3/18 = 3 × 5/18 × 5 = 15/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
45/30 = 45 × 3/30 × 3 = 135/90 - Add the two like fractions:
15/90 + 135/90 = 15 + 135/90 = 150/90 - 150/90 simplified gives 5/3
- So, 3/18 + 45/30 = 5/3
In mixed form: 12/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18+45/30 3/18+90/30 3/36+45/30 3/18+45/60 9/18+45/30 3/54+45/30 3/18+45/90 15/18+45/30 3/90+45/30 21/18+45/30