Add 15/42 and 27/30
15/42 + 27/30 is 44/35.
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,
15/42 = 15 × 5/42 × 5 = 75/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
27/30 = 27 × 7/30 × 7 = 189/210 - Add the two like fractions:
75/210 + 189/210 = 75 + 189/210 = 264/210 - 264/210 simplified gives 44/35
- So, 15/42 + 27/30 = 44/35
In mixed form: 19/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42+27/30 15/42+54/30 15/84+27/30 15/42+27/60 45/42+27/30 15/42+81/30 15/42+27/90 75/42+27/30