Add 15/42 and 2/4
15/42 + 2/4 is 6/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
15/42 = 15 × 2/42 × 2 = 30/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
2/4 = 2 × 21/4 × 21 = 42/84 - Add the two like fractions:
30/84 + 42/84 = 30 + 42/84 = 72/84 - 72/84 simplified gives 6/7
- So, 15/42 + 2/4 = 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42+2/4 15/84+2/4 15/42+2/8 45/42+2/4 15/42+6/4 15/42+2/12 75/42+2/4 15/42+10/4 15/42+2/20 15/42+14/4 15/42+2/28