Add 81/3 and 45/42
1st number: 27 0/3, 2nd number: 1 3/42
81/3 + 45/42 is 393/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 3 × 14 = 42,
81/3 = 81 × 14/3 × 14 = 1134/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
45/42 = 45 × 1/42 × 1 = 45/42 - Add the two like fractions:
1134/42 + 45/42 = 1134 + 45/42 = 1179/42 - 1179/42 simplified gives 393/14
- So, 81/3 + 45/42 = 393/14
In mixed form: 281/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/3+90/42 81/6+45/42 81/3+45/84 81/9+45/42 81/15+45/42 81/21+45/42