Add 42/45 and 15/27
42/45 + 15/27 is 67/45.
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,
42/45 = 42 × 3/45 × 3 = 126/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
15/27 = 15 × 5/27 × 5 = 75/135 - Add the two like fractions:
126/135 + 75/135 = 126 + 75/135 = 201/135 - 201/135 simplified gives 67/45
- So, 42/45 + 15/27 = 67/45
In mixed form: 122/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+15/27 42/45+30/27 42/90+15/27 42/45+15/54 42/45+45/27 42/45+15/81 42/45+75/27