Add 40/14 and 81/42
1st number: 2 12/14, 2nd number: 1 39/42
40/14 + 81/42 is 67/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
40/14 = 40 × 3/14 × 3 = 120/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
81/42 = 81 × 1/42 × 1 = 81/42 - Add the two like fractions:
120/42 + 81/42 = 120 + 81/42 = 201/42 - 201/42 simplified gives 67/14
- So, 40/14 + 81/42 = 67/14
In mixed form: 411/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/14+81/42 40/28+81/42 40/14+81/84 40/42+81/42 40/70+81/42 40/98+81/42