Add 40/4 and 81/42
1st number: 10 0/4, 2nd number: 1 39/42
40/4 + 81/42 is 167/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
40/4 = 40 × 21/4 × 21 = 840/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
81/42 = 81 × 2/42 × 2 = 162/84 - Add the two like fractions:
840/84 + 162/84 = 840 + 162/84 = 1002/84 - 1002/84 simplified gives 167/14
- So, 40/4 + 81/42 = 167/14
In mixed form: 1113/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/4+81/42 40/8+81/42 40/4+81/84 40/12+81/42 40/20+81/42 40/28+81/42