Add 9/30 and 90/8
1st number: 9/30, 2nd number: 11 2/8
9/30 + 90/8 is 231/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
9/30 = 9 × 4/30 × 4 = 36/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
90/8 = 90 × 15/8 × 15 = 1350/120 - Add the two like fractions:
36/120 + 1350/120 = 36 + 1350/120 = 1386/120 - 1386/120 simplified gives 231/20
- So, 9/30 + 90/8 = 231/20
In mixed form: 1111/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/30+90/8 9/60+90/8 9/30+90/16 27/30+90/8 9/90+90/8 9/30+90/24 45/30+90/8 9/30+90/40 63/30+90/8 9/30+90/56