Add 18/4 and 5/81
1st number: 4 2/4, 2nd number: 5/81
18/4 + 5/81 is 739/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
18/4 = 18 × 81/4 × 81 = 1458/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
5/81 = 5 × 4/81 × 4 = 20/324 - Add the two like fractions:
1458/324 + 20/324 = 1458 + 20/324 = 1478/324 - 1478/324 simplified gives 739/162
- So, 18/4 + 5/81 = 739/162
In mixed form: 491/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4+5/81 18/4+10/81 18/8+5/81 54/4+5/81 18/4+15/81 18/12+5/81 90/4+5/81 18/4+25/81 18/20+5/81 18/4+35/81 18/28+5/81