Add 3/9 and 90/8
1st number: 3/9, 2nd number: 11 2/8
3/9 + 90/8 is 139/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
3/9 = 3 × 8/9 × 8 = 24/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
90/8 = 90 × 9/8 × 9 = 810/72 - Add the two like fractions:
24/72 + 810/72 = 24 + 810/72 = 834/72 - 834/72 simplified gives 139/12
- So, 3/9 + 90/8 = 139/12
In mixed form: 117/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/9+90/8 3/18+90/8 3/9+90/16 3/27+90/8 3/9+90/24 15/9+90/8 3/45+90/8 3/9+90/40 21/9+90/8 3/63+90/8 3/9+90/56