Add 15/2 and 42/8
1st number: 7 1/2, 2nd number: 5 2/8
15/2 + 42/8 is 51/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 2 × 4 = 8,
15/2 = 15 × 4/2 × 4 = 60/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
42/8 = 42 × 1/8 × 1 = 42/8 - Add the two like fractions:
60/8 + 42/8 = 60 + 42/8 = 102/8 - 102/8 simplified gives 51/4
- So, 15/2 + 42/8 = 51/4
In mixed form: 123/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2+42/8 15/2+84/8 15/4+42/8 15/2+42/16 45/2+42/8 15/6+42/8 15/2+42/24 75/2+42/8 15/10+42/8 15/2+42/40 15/14+42/8 15/2+42/56