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