Add 90/30 and 7/8
1st number: 3 0/30, 2nd number: 7/8
90/30 + 7/8 is 31/8.
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,
90/30 = 90 × 4/30 × 4 = 360/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
7/8 = 7 × 15/8 × 15 = 105/120 - Add the two like fractions:
360/120 + 105/120 = 360 + 105/120 = 465/120 - 465/120 simplified gives 31/8
- So, 90/30 + 7/8 = 31/8
In mixed form: 37/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+14/8 90/60+7/8 90/30+7/16 90/30+21/8 90/30+7/24 90/30+35/8 90/30+7/40 90/30+49/8 90/30+7/56