Add 81/45 and 42/27
1st number: 1 36/45, 2nd number: 1 15/27
81/45 + 42/27 is 151/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 45 × 3 = 135,
81/45 = 81 × 3/45 × 3 = 243/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
42/27 = 42 × 5/27 × 5 = 210/135 - Add the two like fractions:
243/135 + 210/135 = 243 + 210/135 = 453/135 - 453/135 simplified gives 151/45
- So, 81/45 + 42/27 = 151/45
In mixed form: 316/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/45+84/27 81/90+42/27 81/45+42/54 81/45+42/81