Add 40/18 and 64/45
1st number: 2 4/18, 2nd number: 1 19/45
40/18 + 64/45 is 164/45.
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,
40/18 = 40 × 5/18 × 5 = 200/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
64/45 = 64 × 2/45 × 2 = 128/90 - Add the two like fractions:
200/90 + 128/90 = 200 + 128/90 = 328/90 - 328/90 simplified gives 164/45
- So, 40/18 + 64/45 = 164/45
In mixed form: 329/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18+64/45 40/36+64/45 40/18+64/90 40/54+64/45 40/90+64/45