Add 98/81 and 8/40
1st number: 1 17/81, 2nd number: 8/40
98/81 + 8/40 is 571/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 40 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 81 × 40 = 3240,
98/81 = 98 × 40/81 × 40 = 3920/3240 - Likewise, for the 2nd fraction, since 40 × 81 = 3240,
8/40 = 8 × 81/40 × 81 = 648/3240 - Add the two like fractions:
3920/3240 + 648/3240 = 3920 + 648/3240 = 4568/3240 - 4568/3240 simplified gives 571/405
- So, 98/81 + 8/40 = 571/405
In mixed form: 1166/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/81+16/40 98/81+8/80 98/81+24/40 98/81+56/40