Add 4/18 and 30/45
4/18 + 30/45 is 8/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
4/18 = 4 × 5/18 × 5 = 20/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
30/45 = 30 × 2/45 × 2 = 60/90 - Add the two like fractions:
20/90 + 60/90 = 20 + 60/90 = 80/90 - 80/90 simplified gives 8/9
- So, 4/18 + 30/45 = 8/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18+30/45 4/18+60/45 4/36+30/45 4/18+30/90 12/18+30/45 4/18+90/45 4/54+30/45 20/18+30/45 4/90+30/45 28/18+30/45