Add 18/45 and 6/40
18/45 + 6/40 is 11/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
18/45 = 18 × 8/45 × 8 = 144/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
6/40 = 6 × 9/40 × 9 = 54/360 - Add the two like fractions:
144/360 + 54/360 = 144 + 54/360 = 198/360 - 198/360 simplified gives 11/20
- So, 18/45 + 6/40 = 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45+6/40 18/45+12/40 18/90+6/40 18/45+6/80 54/45+6/40 18/45+18/40 90/45+6/40 18/45+30/40 18/45+42/40