Add 9/20 and 90/8
1st number: 9/20, 2nd number: 11 2/8
9/20 + 90/8 is 117/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
9/20 = 9 × 2/20 × 2 = 18/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
90/8 = 90 × 5/8 × 5 = 450/40 - Add the two like fractions:
18/40 + 450/40 = 18 + 450/40 = 468/40 - 468/40 simplified gives 117/10
- So, 9/20 + 90/8 = 117/10
In mixed form: 117/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20+90/8 9/40+90/8 9/20+90/16 27/20+90/8 9/60+90/8 9/20+90/24 45/20+90/8 9/20+90/40 63/20+90/8 9/20+90/56