Add 81/2 and 30/8
1st number: 40 1/2, 2nd number: 3 6/8
81/2 + 30/8 is 177/4.
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,
30/8 = 30 × 1/8 × 1 = 30/8 - Add the two like fractions:
324/8 + 30/8 = 324 + 30/8 = 354/8 - 354/8 simplified gives 177/4
- So, 81/2 + 30/8 = 177/4
In mixed form: 441/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/2+60/8 81/4+30/8 81/2+30/16 81/2+90/8 81/6+30/8 81/2+30/24 81/10+30/8 81/2+30/40 81/14+30/8 81/2+30/56