Add 80/60 and 75/18
1st number: 1 20/60, 2nd number: 4 3/18
80/60 + 75/18 is 11/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
80/60 = 80 × 3/60 × 3 = 240/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
75/18 = 75 × 10/18 × 10 = 750/180 - Add the two like fractions:
240/180 + 750/180 = 240 + 750/180 = 990/180 - 990/180 simplified gives 11/2
- So, 80/60 + 75/18 = 11/2
In mixed form: 51/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60+75/36 80/60+75/54 80/60+75/90