Add 1/42 and 81/5
1st number: 1/42, 2nd number: 16 1/5
1/42 + 81/5 is 3407/210.
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,
1/42 = 1 × 5/42 × 5 = 5/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
81/5 = 81 × 42/5 × 42 = 3402/210 - Add the two like fractions:
5/210 + 3402/210 = 5 + 3402/210 = 3407/210 - So, 1/42 + 81/5 = 3407/210
In mixed form: 1647/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/42+81/5 1/84+81/5 1/42+81/10 3/42+81/5 1/42+81/15 5/42+81/5 1/42+81/25 7/42+81/5 1/42+81/35