Add 40/18 and 30/80
1st number: 2 4/18, 2nd number: 30/80
40/18 + 30/80 is 187/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
40/18 = 40 × 40/18 × 40 = 1600/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
30/80 = 30 × 9/80 × 9 = 270/720 - Add the two like fractions:
1600/720 + 270/720 = 1600 + 270/720 = 1870/720 - 1870/720 simplified gives 187/72
- So, 40/18 + 30/80 = 187/72
In mixed form: 243/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18+30/80 40/18+60/80 40/36+30/80 40/18+90/80 40/54+30/80 40/90+30/80