Add 84/80 and 28/18
1st number: 1 4/80, 2nd number: 1 10/18
84/80 + 28/18 is 469/180.
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,
84/80 = 84 × 9/80 × 9 = 756/720 - Likewise, for the 2nd fraction, since 18 × 40 = 720,
28/18 = 28 × 40/18 × 40 = 1120/720 - Add the two like fractions:
756/720 + 1120/720 = 756 + 1120/720 = 1876/720 - 1876/720 simplified gives 469/180
- So, 84/80 + 28/18 = 469/180
In mixed form: 2109/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80+56/18 84/80+28/36 84/80+84/18 84/80+28/54 84/80+28/90