Add 2/42 and 81/70
1st number: 2/42, 2nd number: 1 11/70
2/42 + 81/70 is 253/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
2/42 = 2 × 5/42 × 5 = 10/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
81/70 = 81 × 3/70 × 3 = 243/210 - Add the two like fractions:
10/210 + 243/210 = 10 + 243/210 = 253/210 - So, 2/42 + 81/70 = 253/210
In mixed form: 143/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/42+81/70 2/84+81/70 6/42+81/70 10/42+81/70 14/42+81/70