Add 10/42 and 4/15
10/42 + 4/15 is 53/105.
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,
10/42 = 10 × 5/42 × 5 = 50/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
4/15 = 4 × 14/15 × 14 = 56/210 - Add the two like fractions:
50/210 + 56/210 = 50 + 56/210 = 106/210 - 106/210 simplified gives 53/105
- So, 10/42 + 4/15 = 53/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+4/15 10/42+8/15 10/84+4/15 10/42+4/30 30/42+4/15 10/42+12/15 10/42+4/45 50/42+4/15 10/42+20/15 10/42+4/75 70/42+4/15 10/42+28/15