Add 3/42 and 20/35
3/42 + 20/35 is 9/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
3/42 = 3 × 5/42 × 5 = 15/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
20/35 = 20 × 6/35 × 6 = 120/210 - Add the two like fractions:
15/210 + 120/210 = 15 + 120/210 = 135/210 - 135/210 simplified gives 9/14
- So, 3/42 + 20/35 = 9/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42+20/35 3/42+40/35 3/84+20/35 3/42+20/70 9/42+20/35 3/42+60/35 15/42+20/35 21/42+20/35