Add 5/35 and 21/42
5/35 + 21/42 is 9/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 35 × 6 = 210,
5/35 = 5 × 6/35 × 6 = 30/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
21/42 = 21 × 5/42 × 5 = 105/210 - Add the two like fractions:
30/210 + 105/210 = 30 + 105/210 = 135/210 - 135/210 simplified gives 9/14
- So, 5/35 + 21/42 = 9/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/35+21/42 5/70+21/42 5/35+21/84 15/35+21/42 5/35+63/42 25/35+21/42