Add 45/80 and 75/18
1st number: 45/80, 2nd number: 4 3/18
45/80 + 75/18 is 227/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
45/80 = 45 × 9/80 × 9 = 405/720 - Likewise, for the 2nd fraction, since 18 × 40 = 720,
75/18 = 75 × 40/18 × 40 = 3000/720 - Add the two like fractions:
405/720 + 3000/720 = 405 + 3000/720 = 3405/720 - 3405/720 simplified gives 227/48
- So, 45/80 + 75/18 = 227/48
In mixed form: 435/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+75/18 45/80+75/36 45/80+75/54 45/80+75/90