Add 15/8 and 90/36
1st number: 1 7/8, 2nd number: 2 18/36
15/8 + 90/36 is 35/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
15/8 = 15 × 9/8 × 9 = 135/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
90/36 = 90 × 2/36 × 2 = 180/72 - Add the two like fractions:
135/72 + 180/72 = 135 + 180/72 = 315/72 - 315/72 simplified gives 35/8
- So, 15/8 + 90/36 = 35/8
In mixed form: 43/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/8+90/36 15/16+90/36 15/8+90/72 45/8+90/36 15/24+90/36 75/8+90/36 15/40+90/36 15/56+90/36