Add 90/18 and 15/4
1st number: 5 0/18, 2nd number: 3 3/4
90/18 + 15/4 is 35/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
90/18 = 90 × 2/18 × 2 = 180/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
15/4 = 15 × 9/4 × 9 = 135/36 - Add the two like fractions:
180/36 + 135/36 = 180 + 135/36 = 315/36 - 315/36 simplified gives 35/4
- So, 90/18 + 15/4 = 35/4
In mixed form: 83/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18+30/4 90/36+15/4 90/18+15/8 90/18+45/4 90/54+15/4 90/18+15/12 90/18+75/4 90/18+15/20 90/18+15/28