Add 9/8 and 15/90
1st number: 1 1/8, 2nd number: 15/90
9/8 + 15/90 is 31/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
9/8 = 9 × 45/8 × 45 = 405/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
15/90 = 15 × 4/90 × 4 = 60/360 - Add the two like fractions:
405/360 + 60/360 = 405 + 60/360 = 465/360 - 465/360 simplified gives 31/24
- So, 9/8 + 15/90 = 31/24
In mixed form: 17/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/8+15/90 9/8+30/90 9/16+15/90 27/8+15/90 9/8+45/90 9/24+15/90 45/8+15/90 9/8+75/90 9/40+15/90 63/8+15/90 9/56+15/90