Add 45/40 and 8/81
1st number: 1 5/40, 2nd number: 8/81
45/40 + 8/81 is 793/648.
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,
45/40 = 45 × 81/40 × 81 = 3645/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
8/81 = 8 × 40/81 × 40 = 320/3240 - Add the two like fractions:
3645/3240 + 320/3240 = 3645 + 320/3240 = 3965/3240 - 3965/3240 simplified gives 793/648
- So, 45/40 + 8/81 = 793/648
In mixed form: 1145/648
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+8/81 45/40+16/81 45/80+8/81 45/40+24/81 45/40+40/81 45/40+56/81