Add 98/40 and 2/81
1st number: 2 18/40, 2nd number: 2/81
98/40 + 2/81 is 4009/1620.
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,
98/40 = 98 × 81/40 × 81 = 7938/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
2/81 = 2 × 40/81 × 40 = 80/3240 - Add the two like fractions:
7938/3240 + 80/3240 = 7938 + 80/3240 = 8018/3240 - 8018/3240 simplified gives 4009/1620
- So, 98/40 + 2/81 = 4009/1620
In mixed form: 2769/1620
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/40+4/81 98/80+2/81 98/40+6/81 98/40+10/81 98/40+14/81