Add 10/42 and 18/5
1st number: 10/42, 2nd number: 3 3/5
10/42 + 18/5 is 403/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 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 5 × 42 = 210,
18/5 = 18 × 42/5 × 42 = 756/210 - Add the two like fractions:
50/210 + 756/210 = 50 + 756/210 = 806/210 - 806/210 simplified gives 403/105
- So, 10/42 + 18/5 = 403/105
In mixed form: 388/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+18/5 10/42+36/5 10/84+18/5 10/42+18/10 30/42+18/5 10/42+54/5 10/42+18/15 50/42+18/5 10/42+90/5 10/42+18/25 70/42+18/5 10/42+18/35