Add 81/2 and 45/84
1st number: 40 1/2, 2nd number: 45/84
81/2 + 45/84 is 1149/28.
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,
45/84 = 45 × 1/84 × 1 = 45/84 - Add the two like fractions:
3402/84 + 45/84 = 3402 + 45/84 = 3447/84 - 3447/84 simplified gives 1149/28
- So, 81/2 + 45/84 = 1149/28
In mixed form: 411/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/2+90/84 81/4+45/84 81/6+45/84 81/10+45/84 81/14+45/84