Add 10/42 and 35/20
1st number: 10/42, 2nd number: 1 15/20
10/42 + 35/20 is 167/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
10/42 = 10 × 10/42 × 10 = 100/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
35/20 = 35 × 21/20 × 21 = 735/420 - Add the two like fractions:
100/420 + 735/420 = 100 + 735/420 = 835/420 - 835/420 simplified gives 167/84
- So, 10/42 + 35/20 = 167/84
In mixed form: 183/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+35/20 10/42+70/20 10/84+35/20 10/42+35/40 30/42+35/20 10/42+35/60 50/42+35/20 70/42+35/20