Add 30/8 and 90/9
1st number: 3 6/8, 2nd number: 10 0/9
30/8 + 90/9 is 55/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
30/8 = 30 × 9/8 × 9 = 270/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
90/9 = 90 × 8/9 × 8 = 720/72 - Add the two like fractions:
270/72 + 720/72 = 270 + 720/72 = 990/72 - 990/72 simplified gives 55/4
- So, 30/8 + 90/9 = 55/4
In mixed form: 133/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/8+90/9 30/16+90/9 30/8+90/18 90/8+90/9 30/24+90/9 30/8+90/27 30/40+90/9 30/8+90/45 30/56+90/9 30/8+90/63