Add 12/18 and 4/45
12/18 + 4/45 is 34/45.
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,
12/18 = 12 × 5/18 × 5 = 60/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
4/45 = 4 × 2/45 × 2 = 8/90 - Add the two like fractions:
60/90 + 8/90 = 60 + 8/90 = 68/90 - 68/90 simplified gives 34/45
- So, 12/18 + 4/45 = 34/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18+4/45 12/18+8/45 12/36+4/45 12/18+4/90 36/18+4/45 12/18+12/45 12/54+4/45 60/18+4/45 12/18+20/45 12/90+4/45 84/18+4/45 12/18+28/45