Add 16/81 and 32/20
1st number: 16/81, 2nd number: 1 12/20
16/81 + 32/20 is 728/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
16/81 = 16 × 20/81 × 20 = 320/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
32/20 = 32 × 81/20 × 81 = 2592/1620 - Add the two like fractions:
320/1620 + 2592/1620 = 320 + 2592/1620 = 2912/1620 - 2912/1620 simplified gives 728/405
- So, 16/81 + 32/20 = 728/405
In mixed form: 1323/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/81+32/20 16/81+64/20 16/81+32/40 48/81+32/20 16/81+96/20 16/81+32/60 80/81+32/20