Add 15/75 and 90/15
1st number: 15/75, 2nd number: 6 0/15
15/75 + 90/15 is 31/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 15 is 75
Next, find the equivalent fraction of both fractional numbers with denominator 75 - For the 1st fraction, since 75 × 1 = 75,
15/75 = 15 × 1/75 × 1 = 15/75 - Likewise, for the 2nd fraction, since 15 × 5 = 75,
90/15 = 90 × 5/15 × 5 = 450/75 - Add the two like fractions:
15/75 + 450/75 = 15 + 450/75 = 465/75 - 465/75 simplified gives 31/5
- So, 15/75 + 90/15 = 31/5
In mixed form: 61/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/75+90/15 15/75+90/30 45/75+90/15 15/75+90/45 15/75+90/75