Add 90/15 and 15/4
1st number: 6 0/15, 2nd number: 3 3/4
90/15 + 15/4 is 39/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 4 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
90/15 = 90 × 4/15 × 4 = 360/60 - Likewise, for the 2nd fraction, since 4 × 15 = 60,
15/4 = 15 × 15/4 × 15 = 225/60 - Add the two like fractions:
360/60 + 225/60 = 360 + 225/60 = 585/60 - 585/60 simplified gives 39/4
- So, 90/15 + 15/4 = 39/4
In mixed form: 93/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+30/4 90/30+15/4 90/15+15/8 90/15+45/4 90/45+15/4 90/15+15/12 90/15+75/4 90/75+15/4 90/15+15/20 90/15+15/28