Add 15/10 and 18/8
1st number: 1 5/10, 2nd number: 2 2/8
15/10 + 18/8 is 15/4.
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,
15/10 = 15 × 4/10 × 4 = 60/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
18/8 = 18 × 5/8 × 5 = 90/40 - Add the two like fractions:
60/40 + 90/40 = 60 + 90/40 = 150/40 - 150/40 simplified gives 15/4
- So, 15/10 + 18/8 = 15/4
In mixed form: 33/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10+18/8 15/10+36/8 15/20+18/8 15/10+18/16 45/10+18/8 15/10+54/8 15/30+18/8 15/10+18/24 75/10+18/8 15/10+90/8 15/50+18/8 15/10+18/40 15/70+18/8 15/10+18/56