Add 30/10 and 7/8
1st number: 3 0/10, 2nd number: 7/8
30/10 + 7/8 is 31/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
30/10 = 30 × 4/10 × 4 = 120/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
7/8 = 7 × 5/8 × 5 = 35/40 - Add the two like fractions:
120/40 + 35/40 = 120 + 35/40 = 155/40 - 155/40 simplified gives 31/8
- So, 30/10 + 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: 60/10+7/8 30/10+14/8 30/20+7/8 30/10+7/16 90/10+7/8 30/10+21/8 30/10+7/24 30/10+35/8 30/50+7/8 30/10+7/40 30/10+49/8 30/70+7/8 30/10+7/56