Add 40/81 and 40/30
1st number: 40/81, 2nd number: 1 10/30
40/81 + 40/30 is 148/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 30 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
40/81 = 40 × 10/81 × 10 = 400/810 - Likewise, for the 2nd fraction, since 30 × 27 = 810,
40/30 = 40 × 27/30 × 27 = 1080/810 - Add the two like fractions:
400/810 + 1080/810 = 400 + 1080/810 = 1480/810 - 1480/810 simplified gives 148/81
- So, 40/81 + 40/30 = 148/81
In mixed form: 167/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/81+40/30 40/81+80/30 40/81+40/60 40/81+40/90