Add 30/15 and 18/80
1st number: 2 0/15, 2nd number: 18/80
30/15 + 18/80 is 89/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
30/15 = 30 × 16/15 × 16 = 480/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
18/80 = 18 × 3/80 × 3 = 54/240 - Add the two like fractions:
480/240 + 54/240 = 480 + 54/240 = 534/240 - 534/240 simplified gives 89/40
- So, 30/15 + 18/80 = 89/40
In mixed form: 29/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15+18/80 30/15+36/80 90/15+18/80 30/15+54/80 30/45+18/80 30/15+90/80 30/75+18/80