Add 15/75 and 90/80
1st number: 15/75, 2nd number: 1 10/80
15/75 + 90/80 is 53/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 80 is 1200
Next, find the equivalent fraction of both fractional numbers with denominator 1200 - For the 1st fraction, since 75 × 16 = 1200,
15/75 = 15 × 16/75 × 16 = 240/1200 - Likewise, for the 2nd fraction, since 80 × 15 = 1200,
90/80 = 90 × 15/80 × 15 = 1350/1200 - Add the two like fractions:
240/1200 + 1350/1200 = 240 + 1350/1200 = 1590/1200 - 1590/1200 simplified gives 53/40
- So, 15/75 + 90/80 = 53/40
In mixed form: 113/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/75+90/80 45/75+90/80