Add 9/15 and 90/8
1st number: 9/15, 2nd number: 11 2/8
9/15 + 90/8 is 237/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
9/15 = 9 × 8/15 × 8 = 72/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
90/8 = 90 × 15/8 × 15 = 1350/120 - Add the two like fractions:
72/120 + 1350/120 = 72 + 1350/120 = 1422/120 - 1422/120 simplified gives 237/20
- So, 9/15 + 90/8 = 237/20
In mixed form: 1117/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+90/8 9/30+90/8 9/15+90/16 27/15+90/8 9/45+90/8 9/15+90/24 45/15+90/8 9/75+90/8 9/15+90/40 63/15+90/8 9/15+90/56