Add 30/81 and 18/4
1st number: 30/81, 2nd number: 4 2/4
30/81 + 18/4 is 263/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
30/81 = 30 × 4/81 × 4 = 120/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
18/4 = 18 × 81/4 × 81 = 1458/324 - Add the two like fractions:
120/324 + 1458/324 = 120 + 1458/324 = 1578/324 - 1578/324 simplified gives 263/54
- So, 30/81 + 18/4 = 263/54
In mixed form: 447/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/81+18/4 30/81+36/4 30/81+18/8 90/81+18/4 30/81+54/4 30/81+18/12 30/81+90/4 30/81+18/20 30/81+18/28