Add 81/20 and 40/16
1st number: 4 1/20, 2nd number: 2 8/16
81/20 + 40/16 is 131/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
81/20 = 81 × 4/20 × 4 = 324/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
40/16 = 40 × 5/16 × 5 = 200/80 - Add the two like fractions:
324/80 + 200/80 = 324 + 200/80 = 524/80 - 524/80 simplified gives 131/20
- So, 81/20 + 40/16 = 131/20
In mixed form: 611/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/20+80/16 81/40+40/16 81/20+40/32 81/60+40/16 81/20+40/48 81/20+40/80