Add 18/45 and 36/40
18/45 + 36/40 is 13/10.
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,
36/40 = 36 × 9/40 × 9 = 324/360 - Add the two like fractions:
144/360 + 324/360 = 144 + 324/360 = 468/360 - 468/360 simplified gives 13/10
- So, 18/45 + 36/40 = 13/10
In mixed form: 13/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45+36/40 18/45+72/40 18/90+36/40 18/45+36/80 54/45+36/40 90/45+36/40