Add 7/42 and 4/15
7/42 + 4/15 is 13/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
7/42 = 7 × 5/42 × 5 = 35/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
4/15 = 4 × 14/15 × 14 = 56/210 - Add the two like fractions:
35/210 + 56/210 = 35 + 56/210 = 91/210 - 91/210 simplified gives 13/30
- So, 7/42 + 4/15 = 13/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42+4/15 7/42+8/15 7/84+4/15 7/42+4/30 21/42+4/15 7/42+12/15 7/42+4/45 35/42+4/15 7/42+20/15 7/42+4/75 49/42+4/15 7/42+28/15