Add 40/5 and 30/81
1st number: 8 0/5, 2nd number: 30/81
40/5 + 30/81 is 226/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 5 × 81 = 405,
40/5 = 40 × 81/5 × 81 = 3240/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
30/81 = 30 × 5/81 × 5 = 150/405 - Add the two like fractions:
3240/405 + 150/405 = 3240 + 150/405 = 3390/405 - 3390/405 simplified gives 226/27
- So, 40/5 + 30/81 = 226/27
In mixed form: 810/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/5+30/81 40/5+60/81 40/10+30/81 40/5+90/81 40/15+30/81 40/25+30/81 40/35+30/81