Add 27/42 and 80/30
1st number: 27/42, 2nd number: 2 20/30
27/42 + 80/30 is 139/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
27/42 = 27 × 5/42 × 5 = 135/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
80/30 = 80 × 7/30 × 7 = 560/210 - Add the two like fractions:
135/210 + 560/210 = 135 + 560/210 = 695/210 - 695/210 simplified gives 139/42
- So, 27/42 + 80/30 = 139/42
In mixed form: 313/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+80/30 27/84+80/30 27/42+80/60 81/42+80/30 27/42+80/90