Add 45/4 and 20/80
1st number: 11 1/4, 2nd number: 20/80
45/4 + 20/80 is 23/2.
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,
45/4 = 45 × 20/4 × 20 = 900/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
20/80 = 20 × 1/80 × 1 = 20/80 - Add the two like fractions:
900/80 + 20/80 = 900 + 20/80 = 920/80 - 920/80 simplified gives 23/2
- So, 45/4 + 20/80 = 23/2
In mixed form: 111/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4+20/80 45/4+40/80 45/8+20/80 45/4+60/80 45/12+20/80 45/20+20/80 45/28+20/80