Add 81/2 and 42/8
1st number: 40 1/2, 2nd number: 5 2/8
81/2 + 42/8 is 183/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 2 × 4 = 8,
81/2 = 81 × 4/2 × 4 = 324/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
42/8 = 42 × 1/8 × 1 = 42/8 - Add the two like fractions:
324/8 + 42/8 = 324 + 42/8 = 366/8 - 366/8 simplified gives 183/4
- So, 81/2 + 42/8 = 183/4
In mixed form: 453/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/2+84/8 81/4+42/8 81/2+42/16 81/6+42/8 81/2+42/24 81/10+42/8 81/2+42/40 81/14+42/8 81/2+42/56