Add 15/5 and 10/81
1st number: 3 0/5, 2nd number: 10/81
15/5 + 10/81 is 253/81.
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,
15/5 = 15 × 81/5 × 81 = 1215/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
10/81 = 10 × 5/81 × 5 = 50/405 - Add the two like fractions:
1215/405 + 50/405 = 1215 + 50/405 = 1265/405 - 1265/405 simplified gives 253/81
- So, 15/5 + 10/81 = 253/81
In mixed form: 310/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/5+10/81 15/5+20/81 15/10+10/81 45/5+10/81 15/5+30/81 75/5+10/81 15/5+50/81 15/25+10/81 15/5+70/81 15/35+10/81