Add 28/84 and 27/10
1st number: 28/84, 2nd number: 2 7/10
28/84 + 27/10 is 91/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
28/84 = 28 × 5/84 × 5 = 140/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
27/10 = 27 × 42/10 × 42 = 1134/420 - Add the two like fractions:
140/420 + 1134/420 = 140 + 1134/420 = 1274/420 - 1274/420 simplified gives 91/30
- So, 28/84 + 27/10 = 91/30
In mixed form: 31/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/84+27/10 28/84+54/10 28/84+27/20 28/84+81/10 28/84+27/30 28/84+27/50 28/84+27/70