Add 18/8 and 18/20
1st number: 2 2/8, 2nd number: 18/20
18/8 + 18/20 is 63/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
18/8 = 18 × 5/8 × 5 = 90/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
18/20 = 18 × 2/20 × 2 = 36/40 - Add the two like fractions:
90/40 + 36/40 = 90 + 36/40 = 126/40 - 126/40 simplified gives 63/20
- So, 18/8 + 18/20 = 63/20
In mixed form: 33/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8+18/20 18/8+36/20 18/16+18/20 18/8+18/40 54/8+18/20 18/8+54/20 18/24+18/20 18/8+18/60 90/8+18/20 18/8+90/20 18/40+18/20 18/56+18/20