Add 81/4 and 18/8
1st number: 20 1/4, 2nd number: 2 2/8
81/4 + 18/8 is 45/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
81/4 = 81 × 2/4 × 2 = 162/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
18/8 = 18 × 1/8 × 1 = 18/8 - Add the two like fractions:
162/8 + 18/8 = 162 + 18/8 = 180/8 - 180/8 simplified gives 45/2
- So, 81/4 + 18/8 = 45/2
In mixed form: 221/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4+36/8 81/8+18/8 81/4+18/16 81/4+54/8 81/12+18/8 81/4+18/24 81/4+90/8 81/20+18/8 81/4+18/40 81/28+18/8 81/4+18/56