Add 81/18 and 14/40
1st number: 4 9/18, 2nd number: 14/40
81/18 + 14/40 is 97/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
81/18 = 81 × 20/18 × 20 = 1620/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
14/40 = 14 × 9/40 × 9 = 126/360 - Add the two like fractions:
1620/360 + 126/360 = 1620 + 126/360 = 1746/360 - 1746/360 simplified gives 97/20
- So, 81/18 + 14/40 = 97/20
In mixed form: 417/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/18+28/40 81/36+14/40 81/18+14/80 81/18+42/40 81/54+14/40 81/18+70/40 81/90+14/40 81/18+98/40