Add 30/5 and 81/40
1st number: 6 0/5, 2nd number: 2 1/40
30/5 + 81/40 is 321/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
30/5 = 30 × 8/5 × 8 = 240/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
81/40 = 81 × 1/40 × 1 = 81/40 - Add the two like fractions:
240/40 + 81/40 = 240 + 81/40 = 321/40 - So, 30/5 + 81/40 = 321/40
In mixed form: 81/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/5+81/40 30/10+81/40 30/5+81/80 90/5+81/40 30/15+81/40 30/25+81/40 30/35+81/40