Add 40/81 and 28/35
40/81 + 28/35 is 524/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 35 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 81 × 35 = 2835,
40/81 = 40 × 35/81 × 35 = 1400/2835 - Likewise, for the 2nd fraction, since 35 × 81 = 2835,
28/35 = 28 × 81/35 × 81 = 2268/2835 - Add the two like fractions:
1400/2835 + 2268/2835 = 1400 + 2268/2835 = 3668/2835 - 3668/2835 simplified gives 524/405
- So, 40/81 + 28/35 = 524/405
In mixed form: 1119/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/81+28/35 40/81+56/35 40/81+28/70 40/81+84/35