Add 36/40 and 18/80
36/40 + 18/80 is 9/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
36/40 = 36 × 2/40 × 2 = 72/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
18/80 = 18 × 1/80 × 1 = 18/80 - Add the two like fractions:
72/80 + 18/80 = 72 + 18/80 = 90/80 - 90/80 simplified gives 9/8
- So, 36/40 + 18/80 = 9/8
In mixed form: 11/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40+18/80 36/40+36/80 36/80+18/80 36/40+54/80 36/40+90/80