Add 81/2 and 75/84
1st number: 40 1/2, 2nd number: 75/84
81/2 + 75/84 is 1159/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 2 × 42 = 84,
81/2 = 81 × 42/2 × 42 = 3402/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
75/84 = 75 × 1/84 × 1 = 75/84 - Add the two like fractions:
3402/84 + 75/84 = 3402 + 75/84 = 3477/84 - 3477/84 simplified gives 1159/28
- So, 81/2 + 75/84 = 1159/28
In mixed form: 4111/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4+75/84 81/6+75/84 81/10+75/84 81/14+75/84