Add 6/40 and 90/81
1st number: 6/40, 2nd number: 1 9/81
6/40 + 90/81 is 227/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 81 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 40 × 81 = 3240,
6/40 = 6 × 81/40 × 81 = 486/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
90/81 = 90 × 40/81 × 40 = 3600/3240 - Add the two like fractions:
486/3240 + 3600/3240 = 486 + 3600/3240 = 4086/3240 - 4086/3240 simplified gives 227/180
- So, 6/40 + 90/81 = 227/180
In mixed form: 147/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/40+90/81 6/80+90/81 18/40+90/81 30/40+90/81 42/40+90/81