Add 42/45 and 27/10
1st number: 42/45, 2nd number: 2 7/10
42/45 + 27/10 is 109/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
42/45 = 42 × 2/45 × 2 = 84/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
27/10 = 27 × 9/10 × 9 = 243/90 - Add the two like fractions:
84/90 + 243/90 = 84 + 243/90 = 327/90 - 327/90 simplified gives 109/30
- So, 42/45 + 27/10 = 109/30
In mixed form: 319/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+27/10 42/45+54/10 42/90+27/10 42/45+27/20 42/45+81/10 42/45+27/30 42/45+27/50 42/45+27/70