Add 7/42 and 1/15
7/42 + 1/15 is 7/30.
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,
1/15 = 1 × 14/15 × 14 = 14/210 - Add the two like fractions:
35/210 + 14/210 = 35 + 14/210 = 49/210 - 49/210 simplified gives 7/30
- So, 7/42 + 1/15 = 7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42+1/15 7/42+2/15 7/84+1/15 7/42+1/30 21/42+1/15 7/42+3/15 7/42+1/45 35/42+1/15 7/42+5/15 7/42+1/75 49/42+1/15 7/42+7/15