Add 18/4 and 20/80
1st number: 4 2/4, 2nd number: 20/80
18/4 + 20/80 is 19/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
18/4 = 18 × 20/4 × 20 = 360/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
20/80 = 20 × 1/80 × 1 = 20/80 - Add the two like fractions:
360/80 + 20/80 = 360 + 20/80 = 380/80 - 380/80 simplified gives 19/4
- So, 18/4 + 20/80 = 19/4
In mixed form: 43/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4+20/80 18/4+40/80 18/8+20/80 54/4+20/80 18/4+60/80 18/12+20/80 90/4+20/80 18/20+20/80 18/28+20/80