Add 6/8 and 15/42
6/8 + 15/42 is 31/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
6/8 = 6 × 21/8 × 21 = 126/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
15/42 = 15 × 4/42 × 4 = 60/168 - Add the two like fractions:
126/168 + 60/168 = 126 + 60/168 = 186/168 - 186/168 simplified gives 31/28
- So, 6/8 + 15/42 = 31/28
In mixed form: 13/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/8+15/42 6/8+30/42 6/16+15/42 6/8+15/84 18/8+15/42 6/8+45/42 6/24+15/42 30/8+15/42 6/8+75/42 6/40+15/42 42/8+15/42 6/56+15/42