Add 1/81 and 8/40
1/81 + 8/40 is 86/405.
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,
1/81 = 1 × 40/81 × 40 = 40/3240 - Likewise, for the 2nd fraction, since 40 × 81 = 3240,
8/40 = 8 × 81/40 × 81 = 648/3240 - Add the two like fractions:
40/3240 + 648/3240 = 40 + 648/3240 = 688/3240 - 688/3240 simplified gives 86/405
- So, 1/81 + 8/40 = 86/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/81+8/40 1/81+16/40 1/81+8/80 3/81+8/40 1/81+24/40 5/81+8/40 7/81+8/40 1/81+56/40