Add 18/45 and 6/12
18/45 + 6/12 is 9/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
18/45 = 18 × 4/45 × 4 = 72/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
6/12 = 6 × 15/12 × 15 = 90/180 - Add the two like fractions:
72/180 + 90/180 = 72 + 90/180 = 162/180 - 162/180 simplified gives 9/10
- So, 18/45 + 6/12 = 9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45+6/12 18/90+6/12 18/45+6/24 54/45+6/12 18/45+18/12 18/45+6/36 90/45+6/12 18/45+30/12 18/45+6/60 18/45+42/12 18/45+6/84